Chris, MDB's always have to be in a jar. That's how you deploy them. You cannot put them in the jbpm processarchive View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4133660#4133660 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4133660