JBoss development, A new message was posted in the thread "Help: Error [Instrumentor] AOP Instrumentor failed": http://community.jboss.org/message/524777#524777 Author : Kabir Khan Profile : http://community.jboss.org/people/kabir.khan@jboss.com Message: -------------------------------------------------------------- That could happen if you have several deployments containing the MessageContext class (there might be one bundled with the app server for all I know), hence my earlier comment about classloader isolation -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/524777#524777