anonymous wrote : As I understand a ClasscastException is raised at line 435 in the class SAXReader, | this exception is caught at line 468 and again a DocumentException is thrown at line 484: I think you are right, that is what I am finding also. Is there any way to get the details of the stack trace/class cast exception? I thought it might be that jbpm is packaged with a different dom4j jar than jboss 4.0.5, but looking at the manifests of server\default\lib\dom4j.jar and jbpm.war\WEB-INF\lib\dom4j-1.6.1.jar, they look to both be Implementation-Version: 1.6.1 Of course it could be a class loading issue, one was loaded from the container and the other from the war... still looking into it, but thought I would "think out loud" to see if we can get this figured out faster. Dave View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3982074#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...