Hi! I just tried to run my web application and it keeps pulling up a org.hibernate.DuplicateMappingException: duplicate import: PreferenceImpl refers to both org.jboss.portal.core.impl.user.PreferenceImpl and org.jboss.portal.core.impl.model.instance.PreferenceImpl (try using auto-import="false") I did not import this class explicitly but it has to happen somewhere within the Hibernate framework. I tried to set auto-import to false, but it didn't help me out on this one. Does someone know how I can fix this problem? I'd appreciate that! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968326#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...