core.jar, 1.jar, 2.jar and 1 persistence-unit finally I get the error message "...references an unknown entity..." too View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3970723#3970723 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3970723