What steps will reproduce the problem? 1. Take a google group that needs authentication like "Tips4Trade" 2. Take the atom feed: "https://groups.google.com/group/Tips4Trade/feed/atom_v1_0_msgs.xml" 3. Follow steps in section "How to use the library on not-yet-supported services" of user guide 4. Error while doing "val f = s.query(feed, atomFeed.feedPickler)"

What is the expected output? What do you see instead? Expected output should be a list of entries (works for public group feeds) Instead I get this error: [Fatal Error] :35:6: The string "--" is not permitted within comments. Exception in thread "main" java.lang.ExceptionInInitializerError at tmp.Test.main(Test.scala) Caused by: org.xml.sax.SAXParseException: The string "--" is not permitted within comments. at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at javax.xml.parsers.SAXParser.parse(Unknown Source) at scala.xml.parsing.FactoryAdapter.loadXML(FactoryAdapter.scala:292) at scala.xml.parsing.NoBindingFactoryAdapter.loadXML(NoBindingFactoryAdapter.scala:60) at scala.xml.XML$.load(XML.scala:64) at com.google.xml.combinators.LinearStore$.fromInputStream(LinearStore.scala:186) at com.google.gdata.client.GDataRequest.unpickle(GDataRequest.scala:131) at com.google.gdata.Service.query(Service.scala:109) at com.google.gdata.Service.query(Service.scala:96) at tmp.Test$.<init>(Test.scala:14) at tmp.Test$.<clinit>(Test.scala) ... 1 more

What version of the product are you using? On what operating system? version 0.1 on Windows XP, J2SE 1.6, Scala 2.7.1

Please provide any additional information below.

I cannot reproduce it with groups where I'm a member... Could you please post the XML document you get if you connect to that URL (https://groups.google.com/group/Tips4Trade/feed/atom_v1_0_msgs.xml)? It seems the XML parser is complaining about an invalid comment, I wonder if that's not a bug in the SAX libraries (or the server is generating invalid XML).

Here is the file.

This is weird, this file is successfully parsed on my machine. Can you try the following, in the Scala interpreter:

scala> val input = LinearStore.fromFile("atom_v1_0_msgs.xml") scala> import com.google.gdata.data._ import com.google.gdata.data._

scala> val feed = new StdAtomFeed feed: com.google.gdata.data.StdAtomFeed = com.google.gdata.data.StdAtomFeed@4078ee

scala> feed.feedPickler.unpickle(input) res4: com.google.xml.combinators.Picklers.PicklerResult[feed.Feed] = Success(Authors: Id: http://groups.google.com/group/Tips4Trade Title: (Some(text),Tips4Trade Google Group) Updated: 2008-05-05T18:01:34.000Z Entries: Entry: Authors: (Tips4 Trade,None,Some(tips4tr...@gmail.com)) Id: Some(http://groups.google.com/group/Tips4Trade/msg/9b6e7d751aaea5d8) Title: (Some(text),Platinum ... scala>

If that works, try to get the messages that were breaking the library in the first place, and save that file. I assume it is the content of some message in the group that is incorrectly encoded.

Well, your steps worked for me also. But the actual code doesn't. So I created a dummy account with membership of this group (will mail you username/password in separate mail). Here is my snippet:

import com.google.gdata.Service import com.google.gdata.data.StdAtomFeed

object GData1 extends Application { val s = new Service("comp-test-1.0", "cp") {} s.setUserCredentials("USER", "PASSWORD") val atomFeed = new StdAtomFeed val feed = "http://groups.google.com/group/Tips4Trade/feed/atom_v1_0_msgs.xml" val f = s.query(feed, atomFeed.feedPickler) println(f.entries.head) }

Ok, it looks like a xerces bug:

http://issues.apache.org/jira/browse/XERCESJ-477 http://issues.apache.org/jira/browse/XERCESJ-520

I'm not sure yet if there are any workarounds, I will keep looking.