i got a same exception on eclipse 3.4.2 , windows xp ,jboss tools 3.0 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4239583#4239583 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4239583