I just solved the issue by adding the jboss-seam-ui.jar to the WEB-INF/lib folder. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4004126#4004126 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4004126