Then you need Eclipse 3.5. Please download JBoss 3.0.1 if you want to use it with Eclipse 3.4 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4227701#4227701 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4227701