Yes I have looked in the log and yes i understand that they are not the same error. I do not understand why this kind of problem was solved changing the jvm. Am I missing something? At the moment I have not the stacktrace at hand. As soon as I can get them I will hand them here. What has driven me nut is that I have another machine on which the same application and the same jar, in the same relative path worked fine. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4185761#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...