Looks like there was some problem when updating your Jenkins core. The class should definitely be there, but it's not.

Maybe some corruption in your Jenkins installation. Can you try to update it again?

Hi,

When you said "update it again", does it mean that I have to go to (since I upgraded from hudson), "Manager Hudson" >> "Manage Plugins" >> "Adavanced" and click on "Submit" button in the "Update Site" section.

Please advise.

Thanks!
-Laurent

No, I meant the Jenkins core

Hi kutzi,

Does it mean I need to download the jenkins.war files from http://mirrors.jenkins-ci.org/war/latest/jenkins.war and copy it to my apache directory, meaning setup in my end?

Sorry for my "stupid" question.

Thanks!
-Laurent

Yes, that's basically what I meant. I don't know if you're just getting and copying the war or getting it from some package repository

Hi kutzi,

I tried downloading and re-install jenkins, and it still gives me the same error.

FATAL: hudson/model/ResultTrend
java.lang.NoClassDefFoundError: hudson/model/ResultTrend
at hudson.plugins.im.build_notify.SummaryOnlyBuildToChatNotifier.buildCompletionMessage(SummaryOnlyBuildToChatNotifier.java:39)
at hudson.plugins.im.build_notify.DefaultBuildToChatNotifier.buildCompletionMessage(DefaultBuildToChatNotifier.java:50)
at hudson.plugins.im.IMPublisher.notifyChatsOnBuildEnd(IMPublisher.java:577)
at hudson.plugins.im.IMPublisher.notifyOnBuildEnd(IMPublisher.java:304)
at hudson.plugins.im.IMPublisher.perform(IMPublisher.java:291)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:36)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:630)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:608)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:584)
at hudson.model.Build$RunnerImpl.post2(Build.java:159)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:553)
at hudson.model.Run.run(Run.java:1391)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:145)
Caused by: java.lang.ClassNotFoundException: hudson.model.ResultTrend
at org.aspectj.weaver.bcel.ExtensibleURLClassLoader.findClass(ExtensibleURLClassLoader.java:54)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 15 more

While below is from catalina.log

INFO: Trying to reconnect
Feb 8, 2013 5:55:36 PM hudson.plugins.jabber.im.transport.JabberIMConnection createConnection
INFO: Trying to connect to XMPP on chat.MYDOMAIN.com:5222/chat.MYDOMAIN.com with SASL
Feb 8, 2013 5:55:36 PM hudson.plugins.jabber.im.transport.JabberIMConnection setupSubscriptionMode
INFO: Accepting all subscription requests
Feb 8, 2013 5:55:36 PM hudson.plugins.jabber.im.transport.JabberIMConnection connect
INFO: Connected to XMPP on chat.MYDOMAIN.com:5222/chat.MYDOMAIN.com using TLS

Any idea?

Thanks!
-Laurent

Sorry, no real clue.
Can you look into your Jenkins war file and confirm that it's the current one and that this class is there?
I've got the suspicion that you have somewhere an older war lying around which is actually used to start your Jenkins.
BTW: does the version info of the bottom of the Jenkins page really say "1.499"?

It was confirmed that the war file is correct with version 1.4999.

Also, there was no older war lying around that started my Jenkins.

Thanks!
-laurent

> Can you look into your Jenkins war file and confirm that it's the current one and that this class is there?

No response from reporter -> closing as cannot reproduce