You need to update jboss-remoting.jar to the correct version. See the user guide in 1.4.5.GA for it. Howard View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4267198#4267198 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4267198