Hi all, I had the same loader constraints violated when linking org/ajax4jsf/dnd/Draggable after setting the JBoss Loader. It seems to me that there was some kind of mix-up between my library jars in the war WEB-INF/lib and the ones in the server lib directory (I know, I shouldn't do such things). Everything was solved for me when I moved all jars to the EAR directory, and added the modules/java entries to the application.xml file. btw, richfaces rocks!!! :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4054838#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...