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Bug
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Resolution: Won't Fix
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Critical
I have the problem that after the upgrade to Jenkins 1.584 the Jabber notification isn't working anymore.
After restart i get the following messages in the log:
Failed to scout hudson.plugins.jabber.im.transport.JabberPublisher java.lang.UnsupportedClassVersionError: org/jivesoftware/smack/Roster$SubscriptionMode : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:643) at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1138) at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:756) at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1309) at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1365) at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1325) at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1078) at java.lang.ClassLoader.loadClass(ClassLoader.java:268) at hudson.plugins.jabber.im.transport.JabberPublisherDescriptor.<clinit>(JabberPublisherDescriptor.java:75) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at hudson.ExtensionFinder$Sezpoz.scout(ExtensionFinder.java:677) at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:337) at hudson.ExtensionList.load(ExtensionList.java:300) at hudson.ExtensionList.ensureLoaded(ExtensionList.java:253) at hudson.ExtensionList.iterator(ExtensionList.java:143) at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:336) at hudson.ExtensionList.load(ExtensionList.java:300) at hudson.ExtensionList.ensureLoaded(ExtensionList.java:253) at hudson.ExtensionList.get(ExtensionList.java:158) at hudson.PluginManager$PluginUpdateMonitor.getInstance(PluginManager.java:1203) at hudson.maven.PluginImpl.init(PluginImpl.java:58) 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:622) at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:105) at hudson.init.TaskMethodFinder$TaskImpl.run(TaskMethodFinder.java:169) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) at jenkins.model.Jenkins$7.runTask(Jenkins.java:885) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:701)
And the Plugin isn't loading anymore.
[JENKINS-25190] Jabber Plugin not working after Upgrade to 1.584
kutzi
added a comment - Sorry,
seems like the new version of the Jabber library only support Java 7+ and you're probably running on Java 6.
kutzi
added a comment - Sorry,
seems like the new version of the Jabber library only support Java 7+ and you're probably running on Java 6. kutzi
added a comment - Going forward to support new XMPP features and incorporate bug fixes from the Smack library, there's unfortunately no other way than to depend on Smack 4.x an thus requiring Java 7
If you're stuck with Java 6, you must downgrade to Jabber plugin 1.25
kutzi
added a comment - Going forward to support new XMPP features and incorporate bug fixes from the Smack library, there's unfortunately no other way than to depend on Smack 4.x an thus requiring Java 7
If you're stuck with Java 6, you must downgrade to Jabber plugin 1.25 
I also have Issues from today on.
Maybe the part of my log also gives you a hint: