ajax4jsf is *totally independent* of jBPM, certainly for 3.1.x. Could be that your config is not correct, but that is The error you post is most likely incomplete and totally useless for us to try to determine the cause of this error. Sorry, I doubt you'll get an answer to your problem since it can be caused by so many things most of all not jBPM related... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4123852#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...