Ok I figured it out. Basically I was doing it very closely to correctly but since I had a War file and a wsr file that were sharing classes it was failing because it was TOO isolated. The solution was to use a loader-repository, but turn java2ParentDelegation ON (since they were shared): <jboss-app> | <loader-repository> | myapp:archive=myApp.ear | <loader-repository-config> | java2ParentDelegation=true | </loader-repository-config> | </loader-repository> | </jboss-app> View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4211164#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...