where does spring come in? any chance you have multiple jBPM jars? Looks like a classloader problem View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4235298#4235298 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4235298