yeah i found problem because of classpath. i added jbpm-identity.jar and jbpm-jpdl.jar View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4085011#4085011 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4085011