If the unit tests run, it means the processdefinition is ok, your usage of the api is ok, your expectation of what the engine does is ok, the way the testbaseclasses use the engine etc are ok, but it does not mean and I do not want to do any fingerpointing whatsoever, that the console uses the api in the same correct way. Maybe there have been some changes in the api that were not incorporated in the console yet. Do you have the full stacktrace to show where the error occurs? If you think it is caused by the console, please post in that forum (not under jBPM, but under http://www.jboss.org/community/wiki/BPMConsole) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4258835#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...