Yea, I also suspect transaction problems, will try using JTA transaction on JNDI binded Process Engine. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4242239#4242239 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4242239