Yeah, the ContextClassLoader is an own problem which can be solved seperatly and I will start on it next week. The other stuff with the jbpm.deployer is an additional feature (but which needs the ContextClassLoader to be fixed to work correctly). For testing: Hmm, good question. Do you have something in mind? the existing test cases should cover if delegation classes are still executed correctly, but ContextClassLoader issues may be more a problem in complex environments? Maybe Thomas has good thoughts on this? The ideas with the jbpm.deployer also will get interesting to test, I thought about deploying different EAR versions in parallel and test the used classloader and that stuff in the action classes. But it will definitly require a running JBoss... But this will be only part of the Enterprise version anyway... We can also discuss that on friday, but it is indeed independant from the ContextClassLoader problem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179626#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...