Hi Ron, where can I set NO_THROW_ON_ERROR to false or true? At the moment this flag is not set at all in my client! But my problem still exists that when I take a look at the debugger I can the see ServletThrowable only. It seems that the exception I expect (IllegalAccessException) has been transported to the client but it is not accessible. That means that it is visible in the debugger but not useable in my client by using e.getCause() or something like that. Regards, Martin View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4114893#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...