I'm not sure about that error. I'll see if I can get one of the Drools guys to take a peek. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028641#4028641 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4028641