I am still facing the IInvocationTargetException.I am using jbpm 5.4, when creating the StatefulKnowledgeSession without JPAKnowledgeService it is starting the process and executing, but with JPAKnowledgeService it is showing InvocationTargetException. I want to use JPAKnowledgeService to store the session in to the database and again reload it when required using JPAKnowledgeService.loadStatefulKnowledgeSession.
I have attaced the related fles and event the log which i am getting while running the process in eclipse.
regards,
Irshad