I have added jbpm-jpdl.jar in my classpath and i am using libraries from jbpm-jpdl-suite-3.2.2 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4138261#4138261 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4138261