When I when back to get the error I realized it was caused by a problem in my cache-service.xml file. When I fixed that it works. So, all you need to do is copy jboss-cache.jar and jgroups.jar from all/lib to default/lib and put your cache mbean xml in deploy (I just copied and moded the one in all/deploy for the Ejb cache) and it works. Sorry for the confusion and thanks for the responses. Ken View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089531#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...