The jbpm.jpdl.hbm.xml file should be deleted, the JpdlExecution class has been removed from 4.0. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243744#4243744 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243744