jsf-console 3.x on JBoss 6.x possible?

I'm trying to move an application from JBoss 4.2.2 AS to 6.x AS. Right now I'm trying to get jbpm 3.x running on the AS I have this pr开发者_如何学Pythonoblem when trying to upload a .par file to the server:

13:41:51,713 ERROR [org.jbpm.db.GraphSession] (http-127.0.0.1-8888-1) java.lang.ClassCastException: org.jbpm.graph.def.Node_$$_javassist_92 cannot be cast to javassist.util.proxy.ProxyObject

Which then results in: 13:41:51,740 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/app].[ProcessUploadServlet]] (http-127.0.0.1-8888-1) Servlet.service() for servlet ProcessUploadServlet threw exception: org.jbpm.JbpmException: couldn't find process definition 'ProcessName'.

I've tried using both old and new versions of javassist which has no positive effect. Any ideas?

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It seems you are using eclipse plugins and you have class loader problem between 2 plugins, make sure that you have only one class loader to load ProxyObject (Javassist)