JBoss plugin class not found in 5201 - blocks start up

2006-03-25 00:53:22,057 ERROR - com.intellij.ide.IdeEventQueue - Error during dispatching of java.awt.event.InvocationEvent[INVOCATION_DEFAULT,runnable=com.intellij.idea.Main$3@29dbb8,notifier=null,catchExceptions=false,when=1143269591222] on sun.awt.windows.WToolkit@1827c9
java.lang.NoClassDefFoundError: com/intellij/j2ee/j2eeDom/DeploymentDescriptorMetaData
at com.fuhrer.idea.plugin.jboss.JBossIntegration.initComponent(JBossIntegration.java:18)