Still no luck :-( I have reinstalled everything from scratch: - java sdk 1.5.0_07 (no other java's on my machine) - jboss as 4.0.4 GA - jbpm bpel 1.1-beta1 Then I applied the suggested changes. But alas, the problem while running the tests for the hello tutorial persists... One more question though... Do I add the xercesImpl.jar pathelement to the test.classpath? Or do I replace the xml-api.jar with it? I did the first. I also assumed I did not have to copy files around to the endorsed lib folder of the Java runtime. Is this correct? Regards, Koen View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961240#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...