I would guess that you have JSF 1.1 rather than 1.2 running somewhere on your classpath. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4101741#4101741 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4101741