Using selenium-java-2.42.2 jar files, is that a webdriver version also?

Been experiencing this issue running tests at work following weekend (they were functioning
fine on Friday).  Was running Mac OSX 10.9.4, JRE7, Selenium 2.42.0, Firefox 32 and
IntelliJ IDEA 13.  Confirmed that no version control changes have affected test code.
 Upgraded Selenium to 2.42.2, and verified that Firefox was updated to latest version
via standalone and through Selenium FirefoxDriver.  Also tried disabling Firefox add-ons
for Selenium entirely by calling 'return new FirefoxDriver()' instead of 'return new
FirefoxDriver(capabilities)' where capabilities denotes a Capabilities object which
contains a customized Firefox profile.  Still receiving this error message:

Build info: version: '2.42.2', revision: '6a6995d31c7c56c340d6f45a76976d43506cd6cc',
time: '2014-06-03 10:52:47'
System info: host: 'BELC02MG0G6FD58.sea.corp.expecn.com', ip: '192.168.1.100', os.name:
'Mac OS X', os.arch: 'x86_64', os.version: '10.9.4', java.version: '1.7.0_55'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:130)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:191)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:103)
    at setup.WebDriverHelper.generateFirefoxDriver(WebDriverHelper.java:237)
    at setup.WebDriverHelper.createWebDriver(WebDriverHelper.java:89)
    at setup.WebDriverHelper.createWebDriver(WebDriverHelper.java:73)
    at setup.TestBase.setup(TestBase.java:100)
    at setup.TestBase.before(TestBase.java:56)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:564)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:213)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:653)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
    at org.testng.TestRunner.privateRun(TestRunner.java:767)
    at org.testng.TestRunner.run(TestRunner.java:617)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:348)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:343)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:305)
    at org.testng.SuiteRunner.run(SuiteRunner.java:254)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
    at org.testng.TestNG.run(TestNG.java:1057)
    at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:125)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
:firebug@software.joehewitt.com visible
1409695720843   DeferredSave.extensions.json    DEBUG   Save changes
1409695720843   DeferredSave.extensions.json    DEBUG   Save changes
1409695720845   addons.xpi  DEBUG   Loading bootstrap scope from /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/firebug@software.joehewitt.com
1409695720850   addons.xpi  DEBUG   Calling bootstrap method install on firebug@software.joehewitt.com
version 2.0.3
1409695720850   addons.xpi  DEBUG   New add-on fxdriver@googlecode.com installed in app-profile
1409695720854   addons.xpi-utils    DEBUG   Make addon app-profile:fxdriver@googlecode.com
visible
1409695720854   DeferredSave.extensions.json    DEBUG   Save changes
1409695720854   DeferredSave.extensions.json    DEBUG   Save changes
1409695720855   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1409695720856   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1409695720856   DeferredSave.extensions.json    DEBUG   Save changes
1409695720856   DeferredSave.extensions.json    DEBUG   Save changes
1409695720882   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1409695720882   addons.xpi-utils    DEBUG   Updating add-on states
1409695720883   addons.xpi-utils    DEBUG   Writing add-ons list
1409695720883   addons.xpi  DEBUG   Registering manifest for /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/firebug@software.joehewitt.com
1409695720884   addons.xpi  DEBUG   Calling bootstrap method startup on firebug@software.joehewitt.com
version 2.0.3
1409695721113   DeferredSave.extensions.json    DEBUG   Starting timer
1409695721147   addons.manager  DEBUG   shutdown
1409695721149   DeferredSave.extensions.json    DEBUG   Starting write
1409695721149   addons.xpi  DEBUG   shutdown
1409695721149   addons.xpi-utils    DEBUG   shutdown
1409695721181   DeferredSave.extensions.json    DEBUG   Write succeeded
1409695721182   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1409695721182   addons.xpi  DEBUG   Notifying XPI shutdown observers
1409695721183   addons.manager  DEBUG   Async provider shutdown done
1409695721581   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1409695721582   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1409695721584   addons.xpi  DEBUG   startup
1409695721584   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1409695721584   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /Applications/Firefox.app/Contents/MacOS/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1409695721585   addons.xpi  INFO    Mapping firebug@software.joehewitt.com to /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/firebug@software.joehewitt.com
1409695721585   addons.xpi  INFO    Mapping fxdriver@googlecode.com to /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/fxdriver@googlecode.com
1409695721585   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/webdriver-staging
1409695721585   addons.xpi  DEBUG   checkForChanges
1409695721615   addons.xpi  DEBUG   No changes found
1409695721618   addons.xpi  DEBUG   Registering manifest for /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/firebug@software.joehewitt.com
1409695721618   addons.xpi  DEBUG   Loading bootstrap scope from /var/folders/_h/0xkn77jj17d9njr1y8nb61v9_03p_m/T/anonymous910990302777416201webdriver-profile/extensions/firebug@software.joehewitt.com
1409695721621   addons.xpi  DEBUG   Calling bootstrap method startup on firebug@software.joehewitt.com
version 2.0.3
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 677: aUrl is undefined

Not sure who responsible party is here, but would suspect that this is affecting MANY
users since it is not specific to individual Firefox profiles or Capabilities objects.

Update:  Also experiencing this when running tests via command line with mvn test. 
This does not appear to be an IDE issue.

Resolution:  Downgrading Firefox version from 32.0 to 30.0 has resolved this issue for
me.  Firefox application appears to be at fault here.

Thanks for your information. 

Same problem on Yosemite 10.10 beta. Downgrading 32 to 31 fixes the problem. ;_;

Bugzilla bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1063589

Installing the latest webdriver 2.43 works with firefox 32 also.

No need to downgrade Firefox just upgrade webdriver to 2.43 the issue will be resolved.

Still experience the issue with firefox 32.01 and webdriver 2.43 on OS X 10.9.4.

Firefox opens with a blank page and then the error messages:

Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
BUG Skipping unavailable install location app-system-share
1410787573943   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /Applications/Firefox.app/Contents/MacOS/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1410787573943   addons.xpi  INFO    Mapping fxdriver@googlecode.com to /var/folders/47/9_p9lgl92bx5dj4c1df3h1cc0000gn/T/anonymous703295437905550482webdriver-profile/extensions/fxdriver@googlecode.com
1410787573943   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: /var/folders/47/9_p9lgl92bx5dj4c1df3h1cc0000gn/T/anonymous703295437905550482webdriver-profile/extensions/webdriver-staging
1410787573943   addons.xpi  DEBUG   checkForChanges
1410787573947   addons.xpi  DEBUG   Directory state JSON differs: cache [] state [{"name":"app-global","addons":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"descriptor":"/Applications/Firefox.app/Contents/MacOS/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}","mtime":1410687631000,"rdfTime":1410687630000}}},{"name":"app-profile","addons":{"fxdriver@googlecode.com":{"descriptor":"/var/folders/47/9_p9lgl92bx5dj4c1df3h1cc0000gn/T/anonymous703295437905550482webdriver-profile/extensions/fxdriver@googlecode.com","mtime":1410787573000,"rdfTime":1410787573000}}}]
1410787573950   addons.xpi-utils    DEBUG   Opening XPI database /var/folders/47/9_p9lgl92bx5dj4c1df3h1cc0000gn/T/anonymous703295437905550482webdriver-profile/extensions.json
1410787573950   addons.xpi  DEBUG   New add-on fxdriver@googlecode.com installed in app-profile
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1410787573962   addons.xpi-utils    DEBUG   Make addon app-profile:fxdriver@googlecode.com
visible
1410787573963   DeferredSave.extensions.json    DEBUG   Save changes
1410787573963   DeferredSave.extensions.json    DEBUG   Save changes
1410787573963   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1410787573965   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1410787573965   DeferredSave.extensions.json    DEBUG   Save changes
1410787573965   DeferredSave.extensions.json    DEBUG   Save changes
1410787573967   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1410787573967   addons.xpi-utils    DEBUG   Updating add-on states
1410787573968   addons.xpi-utils    DEBUG   Writing add-ons list
1410787574384   DeferredSave.extensions.json    DEBUG   Starting timer
1410787574418   addons.manager  DEBUG   shutdown
1410787574419   DeferredSave.extensions.json    DEBUG   Starting write
1410787574420   addons.xpi  DEBUG   shutdown
1410787574420   addons.xpi-utils    DEBUG   shutdown
1410787574449   DeferredSave.extensions.json    DEBUG   Write succeeded
1410787574449   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1410787574449   addons.xpi  DEBUG   Notifying XPI shutdown observers
1410787574451   addons.manager  DEBUG   Async provider shutdown done
1410787574669   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1410787574670   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1410787574671   addons.xpi  DEBUG   startup
1410787574672   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1410787574672   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /Applications/Firefox.app/Contents/MacOS/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1410787574673   addons.xpi  INFO    Mapping fxdriver@googlecode.com to /var/folders/47/9_p9lgl92bx5dj4c1df3h1cc0000gn/T/anonymous703295437905550482webdriver-profile/extensions/fxdriver@googlecode.com
1410787574673   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: /var/folders/47/9_p9lgl92bx5dj4c1df3h1cc0000gn/T/anonymous703295437905550482webdriver-profile/extensions/webdriver-staging
1410787574673   addons.xpi  DEBUG   checkForChanges
1410787574676   addons.xpi  DEBUG   No changes found
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 677: aUrl is undefined

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    ... 46 more

looks like for Mac you can use version 2.43.1

I ran into the same issue, updated selenium-java and selenium-firefox-driver to 2.43.0.
 Now when I run my test it pops up "Profile Missing - Your Firefox profile cannot be
loaded. It may be missing or inaccessible."

On Firefox 31 Seleinum Webdriver works fine. But today I upgraded to 32 now problem
starts. 

Update : I tested with Windows 8 FF 32 and Selenium-Webdriver 2.43.1. It works.

Yup. The new version [2.43.1 - http://www.seleniumhq.org/download/] works for FF32.

Nope!

I'm running windows 8 (64 bit), with FF 32.0.3
Build identifier: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0
and selenium 2.44.0 and i get the same as above

Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:

followed by a load of guff, then:

JavaScript error: chrome://browser/content/urlbarBindings.xml, line 677: aUrl is undefined

Experiencing the same issue with firefox version 33 and webdriver version 2.44. Was
working fine in old firefox version.


org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 45000 ms. Firefox console output:
s.json  DEBUG   Save changes
1415346745909   addons.xpi  DEBUG   New add-on langpack-en-GB@firefox.mozilla.org installed
in app-global
1415346745927   addons.xpi-utils    DEBUG   Make addon app-global:langpack-en-GB@firefox.mozilla.org
visible
1415346745928   DeferredSave.extensions.json    DEBUG   Save changes
1415346745928   DeferredSave.extensions.json    DEBUG   Save changes
1415346745928   addons.xpi  DEBUG   New add-on {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} installed
in app-global
1415346745938   addons.xpi-utils    DEBUG   Make addon app-global:{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
visible
1415346745938   DeferredSave.extensions.json    DEBUG   Save changes
1415346745938   DeferredSave.extensions.json    DEBUG   Save changes
1415346745938   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1415346745953   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1415346745953   DeferredSave.extensions.json    DEBUG   Save changes
1415346745953   DeferredSave.extensions.json    DEBUG   Save changes
1415346745963   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1415346745963   addons.xpi-utils    DEBUG   Updating add-on states
1415346745963   addons.xpi-utils    DEBUG   Writing add-ons list
1415346747912   DeferredSave.extensions.json    DEBUG   Starting timer
1415346747936   DeferredSave.extensions.json    DEBUG   Starting write
1415346748004   addons.manager  DEBUG   shutdown
1415346748027   addons.xpi  DEBUG   shutdown
1415346748027   addons.xpi-utils    DEBUG   shutdown
1415346748187   DeferredSave.extensions.json    DEBUG   Write succeeded
1415346748188   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1415346748188   addons.xpi  DEBUG   Notifying XPI shutdown observers
1415346748190   addons.manager  DEBUG   Async provider shutdown done

(process:6244): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0'
failed

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon
after class was initialised
1415346752399   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1415346752401   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1415346752405   addons.xpi  DEBUG   startup
1415346752418   addons.xpi  INFO    Mapping mint-search-enhancer@linuxmint.com to /usr/lib/firefox/browser/extensions/mint-search-enhancer@linuxmint.com
1415346752419   addons.xpi  INFO    Mapping langpack-en-ZA@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-ZA@firefox.mozilla.org.xpi
1415346752419   addons.xpi  INFO    Mapping langpack-en-GB@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-GB@firefox.mozilla.org.xpi
1415346752419   addons.xpi  INFO    Mapping {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} to /usr/lib/firefox/browser/extensions/{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
1415346752420   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1415346752420   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: /tmp/anonymous1071991841462171460webdriver-profile/extensions/webdriver-staging
1415346752420   addons.xpi  INFO    Mapping fxdriver@googlecode.com to /tmp/anonymous1071991841462171460webdriver-profile/extensions/fxdriver@googlecode.com
1415346752421   addons.xpi  DEBUG   checkForChanges
1415346752431   addons.xpi  DEBUG   No changes found
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
1415346790477   addons.manager  DEBUG   shutdown
1415346790479   addons.xpi  DEBUG   shutdown
1415346790479   addons.xpi  DEBUG   Notifying XPI shutdown observers
1415346790482   addons.manager  DEBUG   Async provider shutdown done

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:193)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
    at com.CheckBox.main(CheckBox.java:26)
Exception in thread "main" org.openqa.selenium.WebDriverException: Failed to connect
to binary FirefoxBinary(/usr/bin/firefox) on port 7055; process output follows: 
s.json  DEBUG   Save changes
1415346745909   addons.xpi  DEBUG   New add-on langpack-en-GB@firefox.mozilla.org installed
in app-global
1415346745927   addons.xpi-utils    DEBUG   Make addon app-global:langpack-en-GB@firefox.mozilla.org
visible
1415346745928   DeferredSave.extensions.json    DEBUG   Save changes
1415346745928   DeferredSave.extensions.json    DEBUG   Save changes
1415346745928   addons.xpi  DEBUG   New add-on {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} installed
in app-global
1415346745938   addons.xpi-utils    DEBUG   Make addon app-global:{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
visible
1415346745938   DeferredSave.extensions.json    DEBUG   Save changes
1415346745938   DeferredSave.extensions.json    DEBUG   Save changes
1415346745938   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1415346745953   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1415346745953   DeferredSave.extensions.json    DEBUG   Save changes
1415346745953   DeferredSave.extensions.json    DEBUG   Save changes
1415346745963   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1415346745963   addons.xpi-utils    DEBUG   Updating add-on states
1415346745963   addons.xpi-utils    DEBUG   Writing add-ons list
1415346747912   DeferredSave.extensions.json    DEBUG   Starting timer
1415346747936   DeferredSave.extensions.json    DEBUG   Starting write
1415346748004   addons.manager  DEBUG   shutdown
1415346748027   addons.xpi  DEBUG   shutdown
1415346748027   addons.xpi-utils    DEBUG   shutdown
1415346748187   DeferredSave.extensions.json    DEBUG   Write succeeded
1415346748188   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1415346748188   addons.xpi  DEBUG   Notifying XPI shutdown observers
1415346748190   addons.manager  DEBUG   Async provider shutdown done

(process:6244): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0'
failed

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon
after class was initialised
1415346752399   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1415346752401   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1415346752405   addons.xpi  DEBUG   startup
1415346752418   addons.xpi  INFO    Mapping mint-search-enhancer@linuxmint.com to /usr/lib/firefox/browser/extensions/mint-search-enhancer@linuxmint.com
1415346752419   addons.xpi  INFO    Mapping langpack-en-ZA@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-ZA@firefox.mozilla.org.xpi
1415346752419   addons.xpi  INFO    Mapping langpack-en-GB@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-GB@firefox.mozilla.org.xpi
1415346752419   addons.xpi  INFO    Mapping {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} to /usr/lib/firefox/browser/extensions/{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
1415346752420   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1415346752420   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: /tmp/anonymous1071991841462171460webdriver-profile/extensions/webdriver-staging
1415346752420   addons.xpi  INFO    Mapping fxdriver@googlecode.com to /tmp/anonymous1071991841462171460webdriver-profile/extensions/fxdriver@googlecode.com
1415346752421   addons.xpi  DEBUG   checkForChanges
1415346752431   addons.xpi  DEBUG   No changes found
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
1415346790477   addons.manager  DEBUG   shutdown
1415346790479   addons.xpi  DEBUG   shutdown
1415346790479   addons.xpi  DEBUG   Notifying XPI shutdown observers
1415346790482   addons.manager  DEBUG   Async provider shutdown done

Build info: version: '2.42.2', revision: '6a6995d', time: '2014-06-03 17:42:03'
System info: host: 'Volga', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version:
'3.13.0-24-generic', java.version: '1.7.0_51'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:130)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:193)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
    at com.CheckBox.main(CheckBox.java:26)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
s.json  DEBUG   Save changes
1415346745909   addons.xpi  DEBUG   New add-on langpack-en-GB@firefox.mozilla.org installed
in app-global
1415346745927   addons.xpi-utils    DEBUG   Make addon app-global:langpack-en-GB@firefox.mozilla.org
visible
1415346745928   DeferredSave.extensions.json    DEBUG   Save changes
1415346745928   DeferredSave.extensions.json    DEBUG   Save changes
1415346745928   addons.xpi  DEBUG   New add-on {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} installed
in app-global
1415346745938   addons.xpi-utils    DEBUG   Make addon app-global:{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
visible
1415346745938   DeferredSave.extensions.json    DEBUG   Save changes
1415346745938   DeferredSave.extensions.json    DEBUG   Save changes
1415346745938   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1415346745953   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1415346745953   DeferredSave.extensions.json    DEBUG   Save changes
1415346745953   DeferredSave.extensions.json    DEBUG   Save changes
1415346745963   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1415346745963   addons.xpi-utils    DEBUG   Updating add-on states
1415346745963   addons.xpi-utils    DEBUG   Writing add-ons list
1415346747912   DeferredSave.extensions.json    DEBUG   Starting timer
1415346747936   DeferredSave.extensions.json    DEBUG   Starting write
1415346748004   addons.manager  DEBUG   shutdown
1415346748027   addons.xpi  DEBUG   shutdown
1415346748027   addons.xpi-utils    DEBUG   shutdown
1415346748187   DeferredSave.extensions.json    DEBUG   Write succeeded
1415346748188   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1415346748188   addons.xpi  DEBUG   Notifying XPI shutdown observers
1415346748190   addons.manager  DEBUG   Async provider shutdown done

(process:6244): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0'
failed

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display
after class was initialised

(firefox:6244): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon
after class was initialised
1415346752399   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1415346752401   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1415346752405   addons.xpi  DEBUG   startup
1415346752418   addons.xpi  INFO    Mapping mint-search-enhancer@linuxmint.com to /usr/lib/firefox/browser/extensions/mint-search-enhancer@linuxmint.com
1415346752419   addons.xpi  INFO    Mapping langpack-en-ZA@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-ZA@firefox.mozilla.org.xpi
1415346752419   addons.xpi  INFO    Mapping langpack-en-GB@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-GB@firefox.mozilla.org.xpi
1415346752419   addons.xpi  INFO    Mapping {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} to /usr/lib/firefox/browser/extensions/{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
1415346752420   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1415346752420   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: /tmp/anonymous1071991841462171460webdriver-profile/extensions/webdriver-staging
1415346752420   addons.xpi  INFO    Mapping fxdriver@googlecode.com to /tmp/anonymous1071991841462171460webdriver-profile/extensions/fxdriver@googlecode.com
1415346752421   addons.xpi  DEBUG   checkForChanges
1415346752431   addons.xpi  DEBUG   No changes found
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
1415346790477   addons.manager  DEBUG   shutdown
1415346790479   addons.xpi  DEBUG   shutdown
1415346790479   addons.xpi  DEBUG   Notifying XPI shutdown observers
1415346790482   addons.manager  DEBUG   Async provider shutdown done

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    ... 7 more

I am getting this error in Linux. Its working fine in windows. Anybody faced this issue
in Linux

I'm using firefox version 32.03, getting same error
Please respond which selenium webdriver version is compatible with it.

Hi I am also getting the same error, I tried adding selenium-server-2.39.0 classes,
and selenium-2.44.0 classes too. My Firefox version is : 33.1.1

Error Log:
org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 45000 ms. Firefox console output:
DEBUG   Make addon app-profile:fxdriver@googlecode.com visible
1416163252003   DeferredSave.extensions.json    DEBUG   Save changes
1416163252004   DeferredSave.extensions.json    DEBUG   Save changes
1416163252005   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1416163252014   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1416163252014   DeferredSave.extensions.json    DEBUG   Save changes
1416163252014   DeferredSave.extensions.json    DEBUG   Save changes
1416163252014   addons.xpi  DEBUG   New add-on {22C7F6C6-8D67-4534-92B5-529A0EC09405} installed
in winreg-app-global
1416163252034   addons.xpi-utils    DEBUG   Make addon winreg-app-global:{22C7F6C6-8D67-4534-92B5-529A0EC09405}
visible
1416163252034   DeferredSave.extensions.json    DEBUG   Save changes
1416163252034   DeferredSave.extensions.json    DEBUG   Save changes
1416163252083   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1416163252083   addons.xpi-utils    DEBUG   Updating add-on states
1416163252088   addons.xpi-utils    DEBUG   Writing add-ons list
1416163252113   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1416163252114   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1416163252118   addons.manager  DEBUG   Registering shutdown blocker for OpenH264Provider
1416163252119   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1416163253716   DeferredSave.extensions.json    DEBUG   Starting timer
1416163253742   DeferredSave.extensions.json    DEBUG   Starting write
1416163253843   addons.manager  DEBUG   shutdown
1416163253844   addons.manager  DEBUG   Calling shutdown blocker for XPIProvider
1416163253845   addons.xpi  DEBUG   shutdown
1416163253845   addons.xpi-utils    DEBUG   shutdown
1416163253847   addons.manager  DEBUG   Calling shutdown blocker for LightweightThemeManager
1416163253848   addons.manager  DEBUG   Calling shutdown blocker for OpenH264Provider
1416163253851   addons.manager  DEBUG   Calling shutdown blocker for PluginProvider
1416163254117   DeferredSave.extensions.json    DEBUG   Write succeeded
1416163254117   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1416163254118   addons.xpi  DEBUG   Notifying XPI shutdown observers
1416163254127   addons.manager  DEBUG   Async provider shutdown done
1416163255775   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1416163255780   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1416163255788   addons.xpi  DEBUG   startup
1416163255790   addons.xpi  INFO    Mapping {22C7F6C6-8D67-4534-92B5-529A0EC09405} to C:\Program
Files (x86)\Trend Micro\OfficeScan Client\FirefoxExtension
1416163255791   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1416163255792   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1416163255794   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to C:\Program
Files (x86)\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}
1416163255797   addons.xpi  INFO    Mapping fxdriver@googlecode.com to C:\Users\sskira1\AppData\Local\Temp\anonymous5687217300352205244webdriver-profile\extensions\fxdriver@googlecode.com
1416163255797   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\sskira1\AppData\Local\Temp\anonymous5687217300352205244webdriver-profile\extensions\webdriver-staging
1416163255798   addons.xpi  DEBUG   checkForChanges
1416163255842   addons.xpi  DEBUG   No changes found
1416163255854   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1416163255856   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1416163255861   addons.manager  DEBUG   Registering shutdown blocker for OpenH264Provider
1416163255861   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
1416163258846   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:250)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:110)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:197)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:190)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:99)
    at com.monsanto.selenium.TestSelenium.main(TestSelenium.java:14)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Exception in thread "main" org.openqa.selenium.WebDriverException: Failed to connect
to binary FirefoxBinary(C:\Program Files (x86)\Mozilla Firefox\firefox.exe) on port
7055; process output follows: 
DEBUG   Make addon app-profile:fxdriver@googlecode.com visible
1416163252003   DeferredSave.extensions.json    DEBUG   Save changes
1416163252004   DeferredSave.extensions.json    DEBUG   Save changes
1416163252005   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1416163252014   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1416163252014   DeferredSave.extensions.json    DEBUG   Save changes
1416163252014   DeferredSave.extensions.json    DEBUG   Save changes
1416163252014   addons.xpi  DEBUG   New add-on {22C7F6C6-8D67-4534-92B5-529A0EC09405} installed
in winreg-app-global
1416163252034   addons.xpi-utils    DEBUG   Make addon winreg-app-global:{22C7F6C6-8D67-4534-92B5-529A0EC09405}
visible
1416163252034   DeferredSave.extensions.json    DEBUG   Save changes
1416163252034   DeferredSave.extensions.json    DEBUG   Save changes
1416163252083   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1416163252083   addons.xpi-utils    DEBUG   Updating add-on states
1416163252088   addons.xpi-utils    DEBUG   Writing add-ons list
1416163252113   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1416163252114   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1416163252118   addons.manager  DEBUG   Registering shutdown blocker for OpenH264Provider
1416163252119   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1416163253716   DeferredSave.extensions.json    DEBUG   Starting timer
1416163253742   DeferredSave.extensions.json    DEBUG   Starting write
1416163253843   addons.manager  DEBUG   shutdown
1416163253844   addons.manager  DEBUG   Calling shutdown blocker for XPIProvider
1416163253845   addons.xpi  DEBUG   shutdown
1416163253845   addons.xpi-utils    DEBUG   shutdown
1416163253847   addons.manager  DEBUG   Calling shutdown blocker for LightweightThemeManager
1416163253848   addons.manager  DEBUG   Calling shutdown blocker for OpenH264Provider
1416163253851   addons.manager  DEBUG   Calling shutdown blocker for PluginProvider
1416163254117   DeferredSave.extensions.json    DEBUG   Write succeeded
1416163254117   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1416163254118   addons.xpi  DEBUG   Notifying XPI shutdown observers
1416163254127   addons.manager  DEBUG   Async provider shutdown done
1416163255775   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1416163255780   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1416163255788   addons.xpi  DEBUG   startup
1416163255790   addons.xpi  INFO    Mapping {22C7F6C6-8D67-4534-92B5-529A0EC09405} to C:\Program
Files (x86)\Trend Micro\OfficeScan Client\FirefoxExtension
1416163255791   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1416163255792   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1416163255794   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to C:\Program
Files (x86)\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}
1416163255797   addons.xpi  INFO    Mapping fxdriver@googlecode.com to C:\Users\sskira1\AppData\Local\Temp\anonymous5687217300352205244webdriver-profile\extensions\fxdriver@googlecode.com
1416163255797   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\sskira1\AppData\Local\Temp\anonymous5687217300352205244webdriver-profile\extensions\webdriver-staging
1416163255798   addons.xpi  DEBUG   checkForChanges
1416163255842   addons.xpi  DEBUG   No changes found
1416163255854   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1416163255856   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1416163255861   addons.manager  DEBUG   Registering shutdown blocker for OpenH264Provider
1416163255861   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
1416163258846   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>

Build info: version: '2.39.0', revision: 'ff23eac', time: '2013-12-16 16:11:32'
System info: host: 'R9MYNWD', ip: '192.168.0.102', os.name: 'Windows 7', os.arch: 'amd64',
os.version: '6.1', java.version: '1.7.0_25'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:130)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:250)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:110)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:197)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:190)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:99)
    at com.monsanto.selenium.TestSelenium.main(TestSelenium.java:14)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
DEBUG   Make addon app-profile:fxdriver@googlecode.com visible
1416163252003   DeferredSave.extensions.json    DEBUG   Save changes
1416163252004   DeferredSave.extensions.json    DEBUG   Save changes
1416163252005   addons.xpi  DEBUG   New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed
in app-global
1416163252014   addons.xpi-utils    DEBUG   Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd}
visible
1416163252014   DeferredSave.extensions.json    DEBUG   Save changes
1416163252014   DeferredSave.extensions.json    DEBUG   Save changes
1416163252014   addons.xpi  DEBUG   New add-on {22C7F6C6-8D67-4534-92B5-529A0EC09405} installed
in winreg-app-global
1416163252034   addons.xpi-utils    DEBUG   Make addon winreg-app-global:{22C7F6C6-8D67-4534-92B5-529A0EC09405}
visible
1416163252034   DeferredSave.extensions.json    DEBUG   Save changes
1416163252034   DeferredSave.extensions.json    DEBUG   Save changes
1416163252083   addons.xpi  DEBUG   Updating database with changes to installed add-ons
1416163252083   addons.xpi-utils    DEBUG   Updating add-on states
1416163252088   addons.xpi-utils    DEBUG   Writing add-ons list
1416163252113   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1416163252114   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1416163252118   addons.manager  DEBUG   Registering shutdown blocker for OpenH264Provider
1416163252119   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1416163253716   DeferredSave.extensions.json    DEBUG   Starting timer
1416163253742   DeferredSave.extensions.json    DEBUG   Starting write
1416163253843   addons.manager  DEBUG   shutdown
1416163253844   addons.manager  DEBUG   Calling shutdown blocker for XPIProvider
1416163253845   addons.xpi  DEBUG   shutdown
1416163253845   addons.xpi-utils    DEBUG   shutdown
1416163253847   addons.manager  DEBUG   Calling shutdown blocker for LightweightThemeManager
1416163253848   addons.manager  DEBUG   Calling shutdown blocker for OpenH264Provider
1416163253851   addons.manager  DEBUG   Calling shutdown blocker for PluginProvider
1416163254117   DeferredSave.extensions.json    DEBUG   Write succeeded
1416163254117   addons.xpi-utils    DEBUG   XPI Database saved, setting schema version preference
to 16
1416163254118   addons.xpi  DEBUG   Notifying XPI shutdown observers
1416163254127   addons.manager  DEBUG   Async provider shutdown done
1416163255775   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1416163255780   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1416163255788   addons.xpi  DEBUG   startup
1416163255790   addons.xpi  INFO    Mapping {22C7F6C6-8D67-4534-92B5-529A0EC09405} to C:\Program
Files (x86)\Trend Micro\OfficeScan Client\FirefoxExtension
1416163255791   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1416163255792   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1416163255794   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to C:\Program
Files (x86)\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}
1416163255797   addons.xpi  INFO    Mapping fxdriver@googlecode.com to C:\Users\sskira1\AppData\Local\Temp\anonymous5687217300352205244webdriver-profile\extensions\fxdriver@googlecode.com
1416163255797   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\sskira1\AppData\Local\Temp\anonymous5687217300352205244webdriver-profile\extensions\webdriver-staging
1416163255798   addons.xpi  DEBUG   checkForChanges
1416163255842   addons.xpi  DEBUG   No changes found
1416163255854   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1416163255856   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1416163255861   addons.manager  DEBUG   Registering shutdown blocker for OpenH264Provider
1416163255861   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
1416163258846   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    ... 12 more

Same issue here with Firefox 34.0.5, Selenium 2.42, Mac OS X 10.8.4, java 1.7.0_45

I had the same issue. Update your libraries, use selenium-java-2.45.0.jar, it works
fine. 

when i was run the testNG xml file for parallel browser, chrome browser working fine,
but firefox browser is not getting the URL, firfox browser is hanged with blank page...how
to slove this issue

i was using 2.45 selenium jar files with fire fox 36v

Can u send me the setup of mozilla versions 24,31,32 any for solving same issue.

Or send me link to download.

Not getting proper link to download

I'm trying using selenium-java-2.45.0.jar with firefox 35 and same issue.

Facing the same issue on FF 36 ,win 7 and selenium 2.45

Create new workspace and add latest jar

You set your path System variable : C:\Program Files (x86)\Mozilla Firefox

Also write 

@Before
    public void setUp() throws Exception {
    System.setProperty("webdriver.firefox.bin","C:\\Program Files (x86)\\Mozilla Firefox\\Firefox.exe");
 ==> Set this line in code
    driver = new FirefoxDriver();
    baseUrl = "https://www.facebook.com/";
    driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);

your problem will be solved....i have done and mine is working now....

Used Selenium 2.45(http://selenium-release.storage.googleapis.com/index.html?path=2.45/)
+ Firefox 36.0.4, the issue is fixed.

Upgraded to 'selenium-2.45.0' and 'Mozilla Firefox 37.0.1'. Working now :)

Hi,
Even am facing the same issue with selenium jar 2.44 and Firefox version 38.0

M yes  happens to me with selenium 2.45.0 and FF 38

I am also able to reproduce this issue in selenium 2.45.0 and FF 38 on both Mac and
Win.  All other browser IE 2.46.0 and Chrome 2.15  are working fine.

And also reproduce issue on selenium 2.46.0

I am also facing the same issue with Selenium jar 2.46.0 and Firefox 31.7.0 ESR (CCK-IBM)
 on Windows7. I have to test my application on FF31 only.

Getting the below mentioned error,
org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 45000 ms. Firefox console output:
1434026470322   addons.manager  DEBUG   Application has been upgraded
1434026470424   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1434026470427   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1434026470430   addons.xpi  DEBUG   startup
1434026470432   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1434026470432   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1434026470437   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\IBM_AD~1\AppData\Local\Temp\anonymous2912860156876186573webdriver-profile\extensions\webdriver-staging
1434026470468   addons.xpi  DEBUG   checkForChanges
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1434026471747   addons.xpi  DEBUG   Installed distribution add-on IBM-cck@firefox-extensions.ibm.com
1434026473511   addons.xpi  DEBUG   Installed distribution add-on ietab@ip.cn
1434026479506   addons.xpi  DEBUG   Installed distribution add-on langpack-en-US@firefox.mozilla.org
1434026487195   addons.xpi  DEBUG   Installed distribution add-on langpack-es-ES@firefox.mozilla.org
1434026495123   addons.xpi  DEBUG   Installed distribution add-on langpack-fr@firefox.mozilla.org
1434026504758   addons.xpi  DEBUG   Installed distribution add-on langpack-it@firefox.mozilla.org
1434026511314   addons.xpi  DEBUG   Installed distribution add-on langpack-ja@firefox.mozilla.org

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:120)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:275)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:116)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:222)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:215)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211)
    at mozilla.MozillaTestingESR31.main(MozillaTestingESR31.java:23)
Jun 11, 2015 6:11:53 PM org.openqa.selenium.os.UnixProcess$SeleniumWatchDog destroyHarder
INFO: Command failed to close cleanly. Destroying forcefully (v2). org.openqa.selenium.os.UnixProcess$SeleniumWatchDog@7e0b85f9
Exception in thread "main" org.openqa.selenium.WebDriverException: Failed to connect
to binary FirefoxBinary(C:\Program Files (x86)\Mozilla Firefox\firefox.exe) on port
7055; process output follows: 
1434026470322   addons.manager  DEBUG   Application has been upgraded
1434026470424   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1434026470427   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1434026470430   addons.xpi  DEBUG   startup
1434026470432   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1434026470432   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1434026470437   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\IBM_AD~1\AppData\Local\Temp\anonymous2912860156876186573webdriver-profile\extensions\webdriver-staging
1434026470468   addons.xpi  DEBUG   checkForChanges
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1434026471747   addons.xpi  DEBUG   Installed distribution add-on IBM-cck@firefox-extensions.ibm.com
1434026473511   addons.xpi  DEBUG   Installed distribution add-on ietab@ip.cn
1434026479506   addons.xpi  DEBUG   Installed distribution add-on langpack-en-US@firefox.mozilla.org
1434026487195   addons.xpi  DEBUG   Installed distribution add-on langpack-es-ES@firefox.mozilla.org
1434026495123   addons.xpi  DEBUG   Installed distribution add-on langpack-fr@firefox.mozilla.org
1434026504758   addons.xpi  DEBUG   Installed distribution add-on langpack-it@firefox.mozilla.org
1434026511314   addons.xpi  DEBUG   Installed distribution add-on langpack-ja@firefox.mozilla.org

Build info: version: '2.46.0', revision: '87c69e2', time: '2015-06-04 16:17:10'
System info: host: 'ADMINIB-5S5TDTV', ip: '9.77.86.91', os.name: 'Windows 7', os.arch:
'amd64', os.version: '6.1', java.version: '1.8.0_45'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:132)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:275)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:116)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:222)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:215)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211)
    at mozilla.MozillaTestingESR31.main(MozillaTestingESR31.java:23)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
1434026470322   addons.manager  DEBUG   Application has been upgraded
1434026470424   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1434026470427   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1434026470430   addons.xpi  DEBUG   startup
1434026470432   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1434026470432   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1434026470437   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\IBM_AD~1\AppData\Local\Temp\anonymous2912860156876186573webdriver-profile\extensions\webdriver-staging
1434026470468   addons.xpi  DEBUG   checkForChanges
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1434026471747   addons.xpi  DEBUG   Installed distribution add-on IBM-cck@firefox-extensions.ibm.com
1434026473511   addons.xpi  DEBUG   Installed distribution add-on ietab@ip.cn
1434026479506   addons.xpi  DEBUG   Installed distribution add-on langpack-en-US@firefox.mozilla.org
1434026487195   addons.xpi  DEBUG   Installed distribution add-on langpack-es-ES@firefox.mozilla.org
1434026495123   addons.xpi  DEBUG   Installed distribution add-on langpack-fr@firefox.mozilla.org
1434026504758   addons.xpi  DEBUG   Installed distribution add-on langpack-it@firefox.mozilla.org
1434026511314   addons.xpi  DEBUG   Installed distribution add-on langpack-ja@firefox.mozilla.org

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:120)
    ... 6 more

I tried with 
firefox 31.7.0 esr
selenium server 2.40,2.45 and 2.46
windows 7
but still facing the same issue how to resolve it

I am using Windows 64bit machine (windows 7)My FF version was 31.0.8 ESR, and Sel Jars
Version is 2.46.0, I was facing the same issue. 
I upgraded FF version to 38.0.1 ESR, and Sel Jars Version is 2.46.0.
I am getting the same issue. Please please help me to fix this


Error printing in Console is 

org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 45000 ms. Firefox console output:
1436781496255   addons.manager  DEBUG   Application has been upgraded
1436781496362   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1436781496366   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1436781496370   addons.xpi  DEBUG   startup
1436781496371   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1436781496372   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1436781496385   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\IBM_AD~1\AppData\Local\Temp\anonymous2176835764040931553webdriver-profile\extensions\webdriver-staging
1436781496421   addons.xpi  DEBUG   checkForChanges
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1436781513175   addons.xpi  DEBUG   Installed distribution add-on langpack-fr@firefox.mozilla.org

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:120)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:275)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:116)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:222)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:215)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:124)
    at com.qs.Tryff.main(Tryff.java:10)
Jul 13, 2015 3:28:46 PM org.openqa.selenium.os.UnixProcess$SeleniumWatchDog destroyHarder
INFO: Command failed to close cleanly. Destroying forcefully (v2). org.openqa.selenium.os.UnixProcess$SeleniumWatchDog@7e0b85f9
Exception in thread "main" org.openqa.selenium.WebDriverException: Failed to connect
to binary FirefoxBinary(C:\Program Files (x86)\Mozilla Firefox\firefox.exe) on port
7055; process output follows: 
1436781496255   addons.manager  DEBUG   Application has been upgraded
1436781496362   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1436781496366   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1436781496370   addons.xpi  DEBUG   startup
1436781496371   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1436781496372   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1436781496385   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\IBM_AD~1\AppData\Local\Temp\anonymous2176835764040931553webdriver-profile\extensions\webdriver-staging
1436781496421   addons.xpi  DEBUG   checkForChanges
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1436781513175   addons.xpi  DEBUG   Installed distribution add-on langpack-fr@firefox.mozilla.org

Build info: version: '2.46.0', revision: '87c69e2', time: '2015-06-04 16:17:10'
System info: host: 'ADMINIB-SQNNS3F', ip: '9.122.237.59', os.name: 'Windows 7', os.arch:
'amd64', os.version: '6.1', java.version: '1.8.0_45'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:132)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:275)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:116)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:222)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:215)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:124)
    at com.qs.Tryff.main(Tryff.java:10)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
1436781496255   addons.manager  DEBUG   Application has been upgraded
1436781496362   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm:
["XPIProvider"]
1436781496366   addons.manager  DEBUG   Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm:
["LightweightThemeManager"]
1436781496370   addons.xpi  DEBUG   startup
1436781496371   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1436781496372   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1436781496385   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on
ID: C:\Users\IBM_AD~1\AppData\Local\Temp\anonymous2176835764040931553webdriver-profile\extensions\webdriver-staging
1436781496421   addons.xpi  DEBUG   checkForChanges
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1436781513175   addons.xpi  DEBUG   Installed distribution add-on langpack-fr@firefox.mozilla.org

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:120)
    ... 7 more

I am facing the same issue. I have upgraded the selenium-java-2.45.0 . I was previously
using firefox 39.0 and also downgraded 38.0.5 but still its not working.
Please help...

Below is the error:

org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 45000 ms. Firefox console output:
der finished startup: XPIProvider
1438522536819   addons.manager  DEBUG   Starting provider: LightweightThemeManager
1438522536819   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1438522536820   addons.manager  DEBUG   Provider finished startup: LightweightThemeManager
1438522536821   addons.manager  DEBUG   Starting provider: GMPProvider
1438522536828   addons.manager  DEBUG   Registering shutdown blocker for GMPProvider
1438522536829   addons.manager  DEBUG   Provider finished startup: GMPProvider
1438522536829   addons.manager  DEBUG   Starting provider: PluginProvider
1438522536829   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1438522536830   addons.manager  DEBUG   Provider finished startup: PluginProvider
1438522536831   addons.manager  DEBUG   Completed startup sequence
1438522537136   addons.xpi-utils    DEBUG   Starting async load of XPI database C:\Users\Trina\AppData\Local\Temp\anonymous7107444291499633168webdriver-profile\extensions.json
1438522537142   addons.manager  DEBUG   Starting provider: <unnamed-provider>
1438522537142   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>
1438522537144   addons.manager  DEBUG   Provider finished startup: <unnamed-provider>
1438522537694   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
1438522537694   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
1438522537697   addons.xpi-utils    DEBUG   Successfully read XPI database
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
JavaScript error: file:///C:/Users/Trina/AppData/Local/Temp/anonymous7107444291499633168webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js,
line 11487: TypeError: this.server_ is undefined
JavaScript error: chrome://fxdriver/content/server.js, line 38: NS_ERROR_XPC_CI_RETURNED_FAILURE:
Component returned failure code: 0x80570015 (NS_ERROR_XPC_CI_RETURNED_FAILURE) [nsIJSCID.createInstance]
console.error: skype_ff_extension: 
  DEPRECATED: The widget module is deprecated.  Please consider using the sdk/ui module
instead.
Traceback (most recent call last):
  File "resource://gre/modules/Promise-backend.js", line 867, in Handler.prototype.process
    nextValue = this.onResolve.call(undefined, nextValue);
  File "resource://gre/modules/commonjs/sdk/addon/runner.js", line 86, in startup/</<
    run(options);
  File "resource://gre/modules/commonjs/sdk/addon/runner.js", line 145, in run
    let program = main(options.loader, options.main);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 697, in main
    return loader.load(loader, module).exports;
  File "resource://gre/modules/commonjs/sdk/loader/cuddlefish.js", line 79, in CuddlefishLoader/options<.load
    result = load(loader, module);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 323, in load
    evaluate(sandbox, module.uri);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 271, in evaluate
    : loadSubScript(uri, sandbox, encoding);
  File "resource://skype_ff_extension-at-jetpack/skype_ff_extension/lib/main.js", line
14, in null
    var widgets = require("sdk/widget");
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 604, in require
    freeze(load(loader, module));
  File "resource://gre/modules/commonjs/sdk/loader/cuddlefish.js", line 79, in CuddlefishLoader/options<.load
    result = load(loader, module);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 323, in load
    evaluate(sandbox, module.uri);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 271, in evaluate
    : loadSubScript(uri, sandbox, encoding);
  File "resource://gre/modules/commonjs/sdk/widget.js", line 59, in null
    require("./util/deprecate").deprecateUsage(
  File "resource://gre/modules/commonjs/sdk/util/deprecate.js", line 18, in deprecateUsage
    let stack = get().slice(2);
JavaScript error: resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/c2c_options_menu_localization.js,
line 189: TypeError: document.getElementById(...) is null

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:193)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
    at facebook.main(facebook.java:15)
Exception in thread "main" org.openqa.selenium.WebDriverException: Failed to connect
to binary FirefoxBinary(C:\Program Files (x86)\Mozilla Firefox\firefox.exe) on port
7055; process output follows: 
der finished startup: XPIProvider
1438522536819   addons.manager  DEBUG   Starting provider: LightweightThemeManager
1438522536819   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1438522536820   addons.manager  DEBUG   Provider finished startup: LightweightThemeManager
1438522536821   addons.manager  DEBUG   Starting provider: GMPProvider
1438522536828   addons.manager  DEBUG   Registering shutdown blocker for GMPProvider
1438522536829   addons.manager  DEBUG   Provider finished startup: GMPProvider
1438522536829   addons.manager  DEBUG   Starting provider: PluginProvider
1438522536829   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1438522536830   addons.manager  DEBUG   Provider finished startup: PluginProvider
1438522536831   addons.manager  DEBUG   Completed startup sequence
1438522537136   addons.xpi-utils    DEBUG   Starting async load of XPI database C:\Users\Trina\AppData\Local\Temp\anonymous7107444291499633168webdriver-profile\extensions.json
1438522537142   addons.manager  DEBUG   Starting provider: <unnamed-provider>
1438522537142   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>
1438522537144   addons.manager  DEBUG   Provider finished startup: <unnamed-provider>
1438522537694   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
1438522537694   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
1438522537697   addons.xpi-utils    DEBUG   Successfully read XPI database
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
JavaScript error: file:///C:/Users/Trina/AppData/Local/Temp/anonymous7107444291499633168webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js,
line 11487: TypeError: this.server_ is undefined
JavaScript error: chrome://fxdriver/content/server.js, line 38: NS_ERROR_XPC_CI_RETURNED_FAILURE:
Component returned failure code: 0x80570015 (NS_ERROR_XPC_CI_RETURNED_FAILURE) [nsIJSCID.createInstance]
console.error: skype_ff_extension: 
  DEPRECATED: The widget module is deprecated.  Please consider using the sdk/ui module
instead.
Traceback (most recent call last):
  File "resource://gre/modules/Promise-backend.js", line 867, in Handler.prototype.process
    nextValue = this.onResolve.call(undefined, nextValue);
  File "resource://gre/modules/commonjs/sdk/addon/runner.js", line 86, in startup/</<
    run(options);
  File "resource://gre/modules/commonjs/sdk/addon/runner.js", line 145, in run
    let program = main(options.loader, options.main);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 697, in main
    return loader.load(loader, module).exports;
  File "resource://gre/modules/commonjs/sdk/loader/cuddlefish.js", line 79, in CuddlefishLoader/options<.load
    result = load(loader, module);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 323, in load
    evaluate(sandbox, module.uri);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 271, in evaluate
    : loadSubScript(uri, sandbox, encoding);
  File "resource://skype_ff_extension-at-jetpack/skype_ff_extension/lib/main.js", line
14, in null
    var widgets = require("sdk/widget");
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 604, in require
    freeze(load(loader, module));
  File "resource://gre/modules/commonjs/sdk/loader/cuddlefish.js", line 79, in CuddlefishLoader/options<.load
    result = load(loader, module);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 323, in load
    evaluate(sandbox, module.uri);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 271, in evaluate
    : loadSubScript(uri, sandbox, encoding);
  File "resource://gre/modules/commonjs/sdk/widget.js", line 59, in null
    require("./util/deprecate").deprecateUsage(
  File "resource://gre/modules/commonjs/sdk/util/deprecate.js", line 18, in deprecateUsage
    let stack = get().slice(2);
JavaScript error: resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/c2c_options_menu_localization.js,
line 189: TypeError: document.getElementById(...) is null

Build info: version: '2.44.0', revision: '76d78cf', time: '2014-10-23 20:03:00'
System info: host: 'Pc-user', ip: '192.168.1.146', os.name: 'Windows 8.1', os.arch:
'amd64', os.version: '6.3', java.version: '1.8.0_25'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:130)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:193)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
    at facebook.main(facebook.java:15)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
der finished startup: XPIProvider
1438522536819   addons.manager  DEBUG   Starting provider: LightweightThemeManager
1438522536819   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1438522536820   addons.manager  DEBUG   Provider finished startup: LightweightThemeManager
1438522536821   addons.manager  DEBUG   Starting provider: GMPProvider
1438522536828   addons.manager  DEBUG   Registering shutdown blocker for GMPProvider
1438522536829   addons.manager  DEBUG   Provider finished startup: GMPProvider
1438522536829   addons.manager  DEBUG   Starting provider: PluginProvider
1438522536829   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1438522536830   addons.manager  DEBUG   Provider finished startup: PluginProvider
1438522536831   addons.manager  DEBUG   Completed startup sequence
1438522537136   addons.xpi-utils    DEBUG   Starting async load of XPI database C:\Users\Trina\AppData\Local\Temp\anonymous7107444291499633168webdriver-profile\extensions.json
1438522537142   addons.manager  DEBUG   Starting provider: <unnamed-provider>
1438522537142   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>
1438522537144   addons.manager  DEBUG   Provider finished startup: <unnamed-provider>
1438522537694   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
1438522537694   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
1438522537697   addons.xpi-utils    DEBUG   Successfully read XPI database
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
JavaScript error: file:///C:/Users/Trina/AppData/Local/Temp/anonymous7107444291499633168webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js,
line 11487: TypeError: this.server_ is undefined
JavaScript error: chrome://fxdriver/content/server.js, line 38: NS_ERROR_XPC_CI_RETURNED_FAILURE:
Component returned failure code: 0x80570015 (NS_ERROR_XPC_CI_RETURNED_FAILURE) [nsIJSCID.createInstance]
console.error: skype_ff_extension: 
  DEPRECATED: The widget module is deprecated.  Please consider using the sdk/ui module
instead.
Traceback (most recent call last):
  File "resource://gre/modules/Promise-backend.js", line 867, in Handler.prototype.process
    nextValue = this.onResolve.call(undefined, nextValue);
  File "resource://gre/modules/commonjs/sdk/addon/runner.js", line 86, in startup/</<
    run(options);
  File "resource://gre/modules/commonjs/sdk/addon/runner.js", line 145, in run
    let program = main(options.loader, options.main);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 697, in main
    return loader.load(loader, module).exports;
  File "resource://gre/modules/commonjs/sdk/loader/cuddlefish.js", line 79, in CuddlefishLoader/options<.load
    result = load(loader, module);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 323, in load
    evaluate(sandbox, module.uri);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 271, in evaluate
    : loadSubScript(uri, sandbox, encoding);
  File "resource://skype_ff_extension-at-jetpack/skype_ff_extension/lib/main.js", line
14, in null
    var widgets = require("sdk/widget");
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 604, in require
    freeze(load(loader, module));
  File "resource://gre/modules/commonjs/sdk/loader/cuddlefish.js", line 79, in CuddlefishLoader/options<.load
    result = load(loader, module);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 323, in load
    evaluate(sandbox, module.uri);
  File "resource://gre/modules/commonjs/toolkit/loader.js", line 271, in evaluate
    : loadSubScript(uri, sandbox, encoding);
  File "resource://gre/modules/commonjs/sdk/widget.js", line 59, in null
    require("./util/deprecate").deprecateUsage(
  File "resource://gre/modules/commonjs/sdk/util/deprecate.js", line 18, in deprecateUsage
    let stack = get().slice(2);
JavaScript error: resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/c2c_options_menu_localization.js,
line 189: TypeError: document.getElementById(...) is null

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    ... 7 more

Same problem with Firefox 39 and selenium jar 2.47.1. Works on chrome without any issues.
Any update to solve this will be appreciated.

Same problem for me also with FF 39 and selenium 2.47.1. This is taking the URL and
running fine.., but getting the  below exception using webdriver.., any solution or
patch found?

org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on 

org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 45000 ms. Firefox console output:
fd}
1439713636821   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1439713636822   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1439713636823   addons.xpi  DEBUG   checkForChanges
1439713636824   addons.xpi  DEBUG   Loaded add-on state from prefs: {"app-profile":{"fxdriver@googlecode.com":{"d":"C:\\Users\\Aman\\AppData\\Local\\Temp\\anonymous1045971030927817022webdriver-profile\\extensions\\fxdriver@googlecode.com","e":false,"v":"2.42.2","st":1439713630134,"mt":1439713630102}},"app-global":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"d":"C:\\Program
Files (x86)\\Mozilla Firefox\\browser\\extensions\\{972ce4c6-7e08-4474-a285-3208198ce6fd}","e":true,"v":"40.0.2","st":1439542962364,"mt":1439542962262}}}
1439713636827   addons.xpi  DEBUG   getModTime: Recursive scan of {972ce4c6-7e08-4474-a285-3208198ce6fd}
1439713636829   addons.xpi  DEBUG   getInstallState changed: false, state: {"app-profile":{"fxdriver@googlecode.com":{"d":"C:\\Users\\Aman\\AppData\\Local\\Temp\\anonymous1045971030927817022webdriver-profile\\extensions\\fxdriver@googlecode.com","e":false,"v":"2.42.2","st":1439713630134,"mt":1439713630102}},"app-global":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"d":"C:\\Program
Files (x86)\\Mozilla Firefox\\browser\\extensions\\{972ce4c6-7e08-4474-a285-3208198ce6fd}","e":true,"v":"40.0.2","st":1439542962364,"mt":1439542962262}}}
1439713636831   addons.xpi  DEBUG   No changes found
1439713636844   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1439713636846   addons.manager  DEBUG   Provider finished startup: XPIProvider
1439713636846   addons.manager  DEBUG   Starting provider: LightweightThemeManager
1439713636846   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1439713636847   addons.manager  DEBUG   Provider finished startup: LightweightThemeManager
1439713636848   addons.manager  DEBUG   Starting provider: GMPProvider
1439713636855   addons.manager  DEBUG   Registering shutdown blocker for GMPProvider
1439713636856   addons.manager  DEBUG   Provider finished startup: GMPProvider
1439713636856   addons.manager  DEBUG   Starting provider: PluginProvider
1439713636856   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1439713636856   addons.manager  DEBUG   Provider finished startup: PluginProvider
1439713636857   addons.manager  DEBUG   Completed startup sequence
1439713636959   addons.xpi-utils    DEBUG   Starting async load of XPI database C:\Users\Aman\AppData\Local\Temp\anonymous1045971030927817022webdriver-profile\extensions.json
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1439713637154   addons.manager  DEBUG   Starting provider: <unnamed-provider>
1439713637154   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>
1439713637155   addons.manager  DEBUG   Provider finished startup: <unnamed-provider>
1439713637297   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
1439713637297   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
1439713637298   addons.xpi-utils    DEBUG   Successfully read XPI database
1439713637394   addons.manager  DEBUG   Starting provider: PreviousExperimentProvider
1439713637394   addons.manager  DEBUG   Registering shutdown blocker for PreviousExperimentProvider
1439713637395   addons.manager  DEBUG   Provider finished startup: PreviousExperimentProvider
1439713646207   addons.manager  DEBUG   shutdown
1439713646208   addons.manager  DEBUG   Calling shutdown blocker for XPIProvider
1439713646208   addons.xpi  DEBUG   shutdown
1439713646208   addons.xpi-utils    DEBUG   shutdown
1439713646209   addons.manager  DEBUG   Calling shutdown blocker for LightweightThemeManager
1439713646210   addons.manager  DEBUG   Calling shutdown blocker for GMPProvider
1439713646211   addons.manager  DEBUG   Calling shutdown blocker for PluginProvider
1439713646211   addons.manager  DEBUG   Calling shutdown blocker for <unnamed-provider>
1439713646212   addons.manager  DEBUG   Calling shutdown blocker for PreviousExperimentProvider
1439713646214   addons.xpi  DEBUG   Notifying XPI shutdown observers
1439713646217   addons.manager  DEBUG   Async provider shutdown done

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:193)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
    at pac.GmailTest.main(GmailTest.java:11)
Exception in thread "main" org.openqa.selenium.WebDriverException: Failed to connect
to binary FirefoxBinary(C:\Program Files (x86)\Mozilla Firefox\firefox.exe) on port
7055; process output follows: 
fd}
1439713636821   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1439713636822   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1439713636823   addons.xpi  DEBUG   checkForChanges
1439713636824   addons.xpi  DEBUG   Loaded add-on state from prefs: {"app-profile":{"fxdriver@googlecode.com":{"d":"C:\\Users\\Aman\\AppData\\Local\\Temp\\anonymous1045971030927817022webdriver-profile\\extensions\\fxdriver@googlecode.com","e":false,"v":"2.42.2","st":1439713630134,"mt":1439713630102}},"app-global":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"d":"C:\\Program
Files (x86)\\Mozilla Firefox\\browser\\extensions\\{972ce4c6-7e08-4474-a285-3208198ce6fd}","e":true,"v":"40.0.2","st":1439542962364,"mt":1439542962262}}}
1439713636827   addons.xpi  DEBUG   getModTime: Recursive scan of {972ce4c6-7e08-4474-a285-3208198ce6fd}
1439713636829   addons.xpi  DEBUG   getInstallState changed: false, state: {"app-profile":{"fxdriver@googlecode.com":{"d":"C:\\Users\\Aman\\AppData\\Local\\Temp\\anonymous1045971030927817022webdriver-profile\\extensions\\fxdriver@googlecode.com","e":false,"v":"2.42.2","st":1439713630134,"mt":1439713630102}},"app-global":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"d":"C:\\Program
Files (x86)\\Mozilla Firefox\\browser\\extensions\\{972ce4c6-7e08-4474-a285-3208198ce6fd}","e":true,"v":"40.0.2","st":1439542962364,"mt":1439542962262}}}
1439713636831   addons.xpi  DEBUG   No changes found
1439713636844   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1439713636846   addons.manager  DEBUG   Provider finished startup: XPIProvider
1439713636846   addons.manager  DEBUG   Starting provider: LightweightThemeManager
1439713636846   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1439713636847   addons.manager  DEBUG   Provider finished startup: LightweightThemeManager
1439713636848   addons.manager  DEBUG   Starting provider: GMPProvider
1439713636855   addons.manager  DEBUG   Registering shutdown blocker for GMPProvider
1439713636856   addons.manager  DEBUG   Provider finished startup: GMPProvider
1439713636856   addons.manager  DEBUG   Starting provider: PluginProvider
1439713636856   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1439713636856   addons.manager  DEBUG   Provider finished startup: PluginProvider
1439713636857   addons.manager  DEBUG   Completed startup sequence
1439713636959   addons.xpi-utils    DEBUG   Starting async load of XPI database C:\Users\Aman\AppData\Local\Temp\anonymous1045971030927817022webdriver-profile\extensions.json
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1439713637154   addons.manager  DEBUG   Starting provider: <unnamed-provider>
1439713637154   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>
1439713637155   addons.manager  DEBUG   Provider finished startup: <unnamed-provider>
1439713637297   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
1439713637297   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
1439713637298   addons.xpi-utils    DEBUG   Successfully read XPI database
1439713637394   addons.manager  DEBUG   Starting provider: PreviousExperimentProvider
1439713637394   addons.manager  DEBUG   Registering shutdown blocker for PreviousExperimentProvider
1439713637395   addons.manager  DEBUG   Provider finished startup: PreviousExperimentProvider
1439713646207   addons.manager  DEBUG   shutdown
1439713646208   addons.manager  DEBUG   Calling shutdown blocker for XPIProvider
1439713646208   addons.xpi  DEBUG   shutdown
1439713646208   addons.xpi-utils    DEBUG   shutdown
1439713646209   addons.manager  DEBUG   Calling shutdown blocker for LightweightThemeManager
1439713646210   addons.manager  DEBUG   Calling shutdown blocker for GMPProvider
1439713646211   addons.manager  DEBUG   Calling shutdown blocker for PluginProvider
1439713646211   addons.manager  DEBUG   Calling shutdown blocker for <unnamed-provider>
1439713646212   addons.manager  DEBUG   Calling shutdown blocker for PreviousExperimentProvider
1439713646214   addons.xpi  DEBUG   Notifying XPI shutdown observers
1439713646217   addons.manager  DEBUG   Async provider shutdown done

Build info: version: '2.42.2', revision: '6a6995d', time: '2014-06-03 17:42:03'
System info: host: 'Aman', ip: '192.168.0.105', os.name: 'Windows 8.1', os.arch: 'x86',
os.version: '6.3', java.version: '1.8.0_51'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:130)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:193)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
    at pac.GmailTest.main(GmailTest.java:11)
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to
host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
fd}
1439713636821   addons.xpi  DEBUG   Skipping unavailable install location app-system-share
1439713636822   addons.xpi  DEBUG   Skipping unavailable install location app-system-local
1439713636823   addons.xpi  DEBUG   checkForChanges
1439713636824   addons.xpi  DEBUG   Loaded add-on state from prefs: {"app-profile":{"fxdriver@googlecode.com":{"d":"C:\\Users\\Aman\\AppData\\Local\\Temp\\anonymous1045971030927817022webdriver-profile\\extensions\\fxdriver@googlecode.com","e":false,"v":"2.42.2","st":1439713630134,"mt":1439713630102}},"app-global":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"d":"C:\\Program
Files (x86)\\Mozilla Firefox\\browser\\extensions\\{972ce4c6-7e08-4474-a285-3208198ce6fd}","e":true,"v":"40.0.2","st":1439542962364,"mt":1439542962262}}}
1439713636827   addons.xpi  DEBUG   getModTime: Recursive scan of {972ce4c6-7e08-4474-a285-3208198ce6fd}
1439713636829   addons.xpi  DEBUG   getInstallState changed: false, state: {"app-profile":{"fxdriver@googlecode.com":{"d":"C:\\Users\\Aman\\AppData\\Local\\Temp\\anonymous1045971030927817022webdriver-profile\\extensions\\fxdriver@googlecode.com","e":false,"v":"2.42.2","st":1439713630134,"mt":1439713630102}},"app-global":{"{972ce4c6-7e08-4474-a285-3208198ce6fd}":{"d":"C:\\Program
Files (x86)\\Mozilla Firefox\\browser\\extensions\\{972ce4c6-7e08-4474-a285-3208198ce6fd}","e":true,"v":"40.0.2","st":1439542962364,"mt":1439542962262}}}
1439713636831   addons.xpi  DEBUG   No changes found
1439713636844   addons.manager  DEBUG   Registering shutdown blocker for XPIProvider
1439713636846   addons.manager  DEBUG   Provider finished startup: XPIProvider
1439713636846   addons.manager  DEBUG   Starting provider: LightweightThemeManager
1439713636846   addons.manager  DEBUG   Registering shutdown blocker for LightweightThemeManager
1439713636847   addons.manager  DEBUG   Provider finished startup: LightweightThemeManager
1439713636848   addons.manager  DEBUG   Starting provider: GMPProvider
1439713636855   addons.manager  DEBUG   Registering shutdown blocker for GMPProvider
1439713636856   addons.manager  DEBUG   Provider finished startup: GMPProvider
1439713636856   addons.manager  DEBUG   Starting provider: PluginProvider
1439713636856   addons.manager  DEBUG   Registering shutdown blocker for PluginProvider
1439713636856   addons.manager  DEBUG   Provider finished startup: PluginProvider
1439713636857   addons.manager  DEBUG   Completed startup sequence
1439713636959   addons.xpi-utils    DEBUG   Starting async load of XPI database C:\Users\Aman\AppData\Local\Temp\anonymous1045971030927817022webdriver-profile\extensions.json
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
1439713637154   addons.manager  DEBUG   Starting provider: <unnamed-provider>
1439713637154   addons.manager  DEBUG   Registering shutdown blocker for <unnamed-provider>
1439713637155   addons.manager  DEBUG   Provider finished startup: <unnamed-provider>
1439713637297   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
1439713637297   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
1439713637298   addons.xpi-utils    DEBUG   Successfully read XPI database
1439713637394   addons.manager  DEBUG   Starting provider: PreviousExperimentProvider
1439713637394   addons.manager  DEBUG   Registering shutdown blocker for PreviousExperimentProvider
1439713637395   addons.manager  DEBUG   Provider finished startup: PreviousExperimentProvider
1439713646207   addons.manager  DEBUG   shutdown
1439713646208   addons.manager  DEBUG   Calling shutdown blocker for XPIProvider
1439713646208   addons.xpi  DEBUG   shutdown
1439713646208   addons.xpi-utils    DEBUG   shutdown
1439713646209   addons.manager  DEBUG   Calling shutdown blocker for LightweightThemeManager
1439713646210   addons.manager  DEBUG   Calling shutdown blocker for GMPProvider
1439713646211   addons.manager  DEBUG   Calling shutdown blocker for PluginProvider
1439713646211   addons.manager  DEBUG   Calling shutdown blocker for <unnamed-provider>
1439713646212   addons.manager  DEBUG   Calling shutdown blocker for PreviousExperimentProvider
1439713646214   addons.xpi  DEBUG   Notifying XPI shutdown observers
1439713646217   addons.manager  DEBUG   Async provider shutdown done

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    ... 7 more

Hi ,

we are facing the same issue with FF 39.0.3 & Selenium 2.47.1 .

Any immediate help on this would be highly appreciated.

Regards
Avadut

Hi ,
I am also facing same issue with selenium 2.44.0 and firefox 30.0. But in my case some
test cases are running and some test cases breaking.

Complete stack trace:
org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1
on port 7055 after 90000 ms. Firefox console output:
ents
1441172779127   addons.xpi  ERROR   Failure moving C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform\WINNT_x86-msvc\components\webdriver-firefox-esr-previous.dll
to C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\trash\fxdriver@googlecode.com\platform\WINNT_x86-msvc\components
1441172779127   addons.xpi  ERROR   Failed to move entry C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform\WINNT_x86-msvc\components\webdriver-firefox-esr-previous.dll
1441172779127   addons.xpi  ERROR   Failure moving C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform\WINNT_x86-msvc\components
to C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\trash\fxdriver@googlecode.com\platform\WINNT_x86-msvc
1441172779127   addons.xpi  ERROR   Failed to move entry C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform\WINNT_x86-msvc\components
1441172779127   addons.xpi  ERROR   Failure moving C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform\WINNT_x86-msvc
to C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\trash\fxdriver@googlecode.com\platform
1441172779127   addons.xpi  ERROR   Failed to move entry C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform\WINNT_x86-msvc
1441172779127   addons.xpi  ERROR   Failure moving C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform
to C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\trash\fxdriver@googlecode.com
1441172779127   addons.xpi  ERROR   Failed to move entry C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com\platform
1441172779127   addons.xpi  ERROR   Failure moving C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\fxdriver@googlecode.com
to C:\SeleniumTemp\Test.AdminPanel.ReferralTDR.TestReferralTDR.CreateAndVerify_MultipleResellerAgentandRules\anonymous6423624591642117382webdriver-profile\extensions\trash
1441172779135   addons.xpi  ERROR   Failed to process extension changes at startup
1441172779135   addons.xpi  DEBUG   No changes found
1441172779135   addons.xpi  DEBUG   Add-ons list is invalid, rebuilding
JavaScript error: resource:///modules/devtools/gDevTools.jsm, line 582: NS_ERROR_UNEXPECTED:
Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.getCharPref]
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 651: aUrl is undefined
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 651: aUrl is undefined
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 651: aUrl is undefined

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:191)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)

Please provide some help.

Hi,

Having same issue on using Selenium 2.44.0 with Firefox 39 on Window 7 machine having
JDK 1.8.0.45, Eclipse - Luna.

Please help in resolving this issue.

Today even i was facing the same problem.

First installed Latest Firfox version and tried - the problem not resolved.
than installed the selenium-2.47.1  - and added the latest jar to eclipse console.(remove
old once) , 
Restart the eclipse. ---- Finally the issue got resolved... 

Thanks
Hari

Getting the same blank page issue(Unable to connect..) with selenium 2.47.1 and Firefox
40. Somebody anybody please help :(

Arun,

Can you please update your stack trace?

Hi, 
I tried with selenium 2.47.1 and Firefox 40. it worked for me.
with old selenium and FF 39 it was giving same problem.