I don't have any issue deploying 2.4.0 on 4.0.4.GA on OS X. Have you by any chance modified the descriptors? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3972750#3972750 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3972750