com.opensymphony.plugins.clustersupport.JavaGroupsBroadcastingListener

depends on

org/javagroups/blocks/NotificationBus$Consumer.

Unfortunataly the JAR jgroups-2.2.7.bin.zip (which contains jgroups-all.jar) does not contain this class. Instead all classes in this jar are packaged as org.jgroups.

JavaGroups-2.1.1.bin.zip does contain the correct class path, but has been discontinued and will not ever be updated.

Suggestion: Either specify in your clustering docs to use the version that works or update the code to now look for the new classpath that jgroups have changed in their latest versions.

Don't cha hate depending on third party software! =)

-Xavier