if there is no jbpm-jpdl.jar somewhere, you have no jbpm at all. So if you were able to run something before and after that you added jbpm-identity and jbpm-jpdl.jar to WEB-INF/lib, there must already have been a jbpm-jpdl.jar (or older version) somewhere which e.g. does not have access to the identity jar. Might just be a classloader scoping issue. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4180838#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...