Please try the latest CVS. I did more than adding a constructor! (I switched from Serializable to Externalizable.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3986231#3986231 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3986231