I got it. It's the packaging configuration was wrong. It didn't have .class included. -Lngo View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4007672#4007672 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4007672