Make sure you don't have any stale (jboss-seam.jar) jars lying about. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4117313#4117313 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4117313