You cannot use 1.2.0 with jboss4.0.4. It works with 4.0.5 and later versions. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028323#4028323 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4028323