ok - I put together a sample application that can be downloaded here: http://sourceforge.net/project/showfiles.php?group_id=189858&package_... This is an eclipse 3.1 project that is ready to go. Download the file, create the project in eclipse, change the build-properties for your jboss directory and then run the ant target "deploy". Navigate to http://localhost:8080/testApp. The main page will be displayed, click the button "Start dialog" and you will get the error in the jboss server window that I list previously in the thread. Any ideas on what to do next or how I have misconfigued would be appreciated. Also, the only thing I left out was the custom ActionListener (but I don't think that is the cause of this error). Thanks for any help, Chris.... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4037270#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...