Good catch.  I bet it's because install.rdf says 3.0.*
http://code.google.com/p/gears/source/browse/trunk/gears/base/firefox/install.rdf.m4
instead of 3.*

I see Mozilla Developer Center hasn't been updated either; they still recommend 3.0.* 
(see http://developer.mozilla.org/En/Install_Manifests).

Obviously, whoever makes this change should verify that Gears actually *does* work 
with Firefox 3.1. :)

Gears is not compatible with 3.1 - that means, after overriding the version check.

If Gears is active (I used MR Tech Toolkit to make compatible) and I enter Google
Reader - the site hangs, and does not display it's content (only the top line with
all the google services appear).

When Gears is disabled, the site works fine (although no offline usage of-course).

Gears Version: 0.5.4.2
Firefox Version: 3.1b1
RAM: 1.5GB
PC: Intel Pentium M 1.73GHz
Windows XP SP3

(No comment was entered for this change.)

Overriding version check doesn't work.

Gears test page returns:
FF3.1b2/Webkit Nightly "Could not create database: google.gears.factory.create is not
a function"

No issues with Safari Version 3.2.1 (5525.27.1).

Gears Version: 0.5.4.2
Firefox 3.1b2 & Webkit Nightly (r40239)
Mac OS 10.5.6

I too am having this issue. Changing install.rdf does not rectify the situation. Now
that Gmail has enable offline mail, many users are going to want to use Gears just
for this reason. When can we expect an update?


Gears: 0.5.4.2
FF: 3.1b2
Windows 7 (had same issue on Vista, too)

By the way, I'd be happy to be a beta tester for new Gears version on Windows 7.

Same problem here. Gears works fine with Safari though.

I really want gears for Firefox 3.1 too. 
Firefox 3.1 features a faster Javascript rendering engine that really makes a
difference on all the google sites. Please give us a beta of gears to try :)

FYI,

tested on Ubuntu 8.10:
on Firefox 3.1beta2 - does not work
on Firefox 3.1beta3-pre - does not work 
on Firefox 3.2a-pre - does not work

I tested both:
- latest official gears from http://gears.google.com/
- latest trunk 3185 (0.5.11.0;developer;dbg;linux;firefox)

Even if this is not addressed until 3.1 final, http://gears.google.com/ should be
updated to represent what it really supports (1.5-3.0+).

@comment 10.

this is what we have already in the code. See:
http://code.google.com/p/gears/source/browse/trunk/gears/base/firefox/install.rdf.m4#71
The real problem is - how to make gears working with FF3.1.

OSX 10.5.6 - FF3.1b3 doesn't work :-( 3.1 final is approaching!!!

any status on firefox 3.1 compatibility?

there will never be a firefox 3.1

it will be fixed before 3.5 is released.

Good to hear that it'll be fixed before 3.5 (currently marked as 3.1) is released,
but I would really hope/expect Google to start making this available during some of
the beta releases.  We are already on b3.

Actually FF trunk is at 3.1b4 currently.

Trunk is 3.5b4pre http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-
mozilla-1.9.1/

"it will be fixed before 3.5 is released."

Who wants to place bets?

In other interesting news, the Firefox development 
meeting minutes (https://wiki.mozilla.org/Platform/2009-03-24) from a last week report that there are now 
almost 500,000 Firefox 3.1b3 users.

how about fixing it a little earlier, huh?

Hey, the FF 3.5 rc is already out, so Google Gears now must be hurry.

Guess they will fix it months after Finalrelase of FF 3.5. Thumps down ...

Sad to see FireFox support going away. Here's hoping WordPress drops the gears
support for the admin screens and uses the new FireFox offline stuff. Unfortunate.

As you can see the bug is Priority-1
btw: 105 people have starred the bug and might get a mail when you comment. So don't 
comment if you want to say that is not good.

i bet google will publish soon Gears 0.6 and fixes this bug.

I'm now posting this from FF 3.5.  Can propose we change the Issue title?

Is FF really going away? I couldn't find that posted...

Firefox 3.5 is now stable: http://firefox.com/

Stable but still no gears.

(Also posted in issue 335) Here's a precompiled version that'll work with firefox-3.5
from
https://launchpad.net/~ubuntu-mozilla-daily/+archive/ppa on Ubuntu 9.04 x86_64:

http://gkovacs.xvm.mit.edu/google-gears-firefox-3.5-x86_64/gears-linux-x86_64-0.5.25.0.xpi

It was built from http://gears.googlecode.com/svn/trunk revision 3373

If you'd like to build it yourself, use the following commands:

svn co http://gears.googlecode.com/svn/trunk -r3373
cd trunk
wget http://gkovacs.xvm.mit.edu/google-gears-firefox-3.5-x86_64/gears-gcc433.diff
patch -p0 -i gears-gcc433.diff
make

Patch needed to get it compiling on gcc 4.3.3 is attached:

	gears-gcc433.diff
	6.6 KB Download

Updated today to FF 3.5 final, and obviously Gears did not work. Trying to reinstall
did not help.

This issue has been around for a while, and it shouldn't be too hard to fix... maybe
this is on purpose, to push people to Chrome? I doubt it, but I see no other explanation.

Is there anyone from Google reading this, to shed some light?

Thanks.

I've seem to have gears built and working on Ubuntu 9.04 i386.

I used geza0kovacs patch from above. 

I had to chmod 770 third_party/gecko_1.9/linux/gecko_sdk/bin/xpidl

then make and make installers and then edit the rdf file for compatibility with 3.5.1
from the daily ppa and it seems to be working now.

With that patch I get this output:

m4 --prefix-builtins -Ibin-dbg/linux-x86_64/ff31 -DDEBUG=1 -DUSING_CCTESTS=1
-DPRODUCT_VERSION=0.5.25.0 -DPRODUCT_VERSION_MAJOR=0 -DPRODUCT_VERSION_MINOR=5
-DPRODUCT_VERSION_BUILD=25 -DPRODUCT_VERSION_PATCH=0 -DPRODUCT_OS=linux
-DPRODUCT_BROWSER=FF31 -DPRODUCT_ARCH="x86_64" -DPRODUCT_GCC_VERSION="gcc3"
-DPRODUCT_MAINTAINER="google"
-DI18N_LANGUAGES="(en-US,ar,bg,ca,cs,da,de,el,en-GB,es,et,fa,fi,fil,fr,he,hi,hr,hu,id,is,it,ja,ko,lt,lv,ms,nl,no,pl,pt-BR,pt-PT,ro,ru,sk,sl,sr,sv,th,tr,uk,ur,vi,zh-CN,zh-TW,ml,te,gu,kn,or,bn,ta,mr)"
-DPRODUCT_FRIENDLY_NAME_UQ="Google Gears" -DPRODUCT_SHORT_NAME_UQ="gears"
ui/common/settings_dialog.html_m4 >
bin-dbg/linux-x86_64/ff31/genfiles/settings_dialog.html
m4 --prefix-builtins -Ibin-dbg/linux-x86_64/ff31 -DDEBUG=1 -DUSING_CCTESTS=1
-DPRODUCT_VERSION=0.5.25.0 -DPRODUCT_VERSION_MAJOR=0 -DPRODUCT_VERSION_MINOR=5
-DPRODUCT_VERSION_BUILD=25 -DPRODUCT_VERSION_PATCH=0 -DPRODUCT_OS=linux
-DPRODUCT_BROWSER=FF31 -DPRODUCT_ARCH="x86_64" -DPRODUCT_GCC_VERSION="gcc3"
-DPRODUCT_MAINTAINER="google"
-DI18N_LANGUAGES="(en-US,ar,bg,ca,cs,da,de,el,en-GB,es,et,fa,fi,fil,fr,he,hi,hr,hu,id,is,it,ja,ko,lt,lv,ms,nl,no,pl,pt-BR,pt-PT,ro,ru,sk,sl,sr,sv,th,tr,uk,ur,vi,zh-CN,zh-TW,ml,te,gu,kn,or,bn,ta,mr)"
-DPRODUCT_FRIENDLY_NAME_UQ="Google Gears" -DPRODUCT_SHORT_NAME_UQ="gears"
ui/common/shortcuts_dialog.html_m4 >
bin-dbg/linux-x86_64/ff31/genfiles/shortcuts_dialog.html
make genheaders BROWSER=FF31
../third_party/gecko_1.9.1/linux/gecko_sdk/bin/xpidl -I
../third_party/gecko_1.9.1/linux/gecko_sdk/idl -I ../third_party/gecko_1.9.1 -m
header -o bin-dbg/linux-x86_64/ff31/genfiles/interfaces base/firefox/interfaces.idl
ERROR: ld.so: object 'libfakeroot.so' from LD_PRELOAD cannot be preloaded: ignored.
../third_party/gecko_1.9.1/linux/gecko_sdk/bin/xpidl: error while loading shared
libraries: libIDL-2.so.0: wrong ELF class: ELFCLASS64
make[1]: *** [bin-dbg/linux-x86_64/ff31/genfiles/interfaces.h] Error 127
make: *** [default] Error 2
==> ERROR: Falló la compilación.
    Abortando...



I'm on x86_64 with gcc 4.4.0. I also have libidl2 0.8.13, which seems to be the
incompatible package.

In case anyone's interested, here are Firefox 3.5 compatible xpi builds for Windows
i386 (compiled on Visual Studio 2008 SP1) and Linux i386 and x86_64 (compiled using
gcc 4.3.3 on Ubuntu using my patch posted above):

http://gkovacs.xvm.mit.edu/google-gears/gears-win32-opt-0.5.25.0.xpi
http://gkovacs.xvm.mit.edu/google-gears/gears-linux-0.5.25.0.xpi
http://gkovacs.xvm.mit.edu/google-gears/gears-linux-x86_64-0.5.25.0.xpi

great anyone has information on a Mac version that is compatible with 3.5

http://code.google.com/p/gearsff35osx/downloads/list

Anybody have any update as to when Gears will be fixed to work with FF3.5?

Google just began to push gears 0.5.29.0 out. it is working with firefox 3.5

For those who see an empty page on http://gears.google.com, you can install Google 
Gears in FF 3.5 directly by using those URLs:
Mac: http://addons.mozilla.org/google/google_gears_osx.html
Linux: http://addons.mozilla.org/google/google_gears_linux.html

The URLs above redirect to the appropriate XPI files that Firefox will handle correctly.

For Windows, the installation is different I think: http://gears.google.com/?
platform=win

Firefox 3.5.1 is out and Gears 0.5.29.0 is not compatible (although it works if you
set extensions.checkCompatibility to false in about:config)

issue fixed:
http://code.google.com/p/gears/source/browse/trunk/gears/base/firefox/install.rdf.m4?
spec=svn3386&r=3385