Sorry, really don't know. Have you followed all the steps porting to 2.0, like eliminate Ajax4JSF Filter in web.xml, remove the (Tranactional)SeamPhaseListener declaration, etc. etc. etc. I know that there are some open issues since Pete's change of the entity converter, might also be related to the downgrade of the entity converter functionality... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4058682#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...