First off, your ClassCastException was at your second narrow, according to the stack trace you provided, and indeed a second narrow should not be done. Good move cleaning up classes from your web tier, though. Classes that exist in the ejb tier should not be duplicated in your web tier. As long as both tiers are bundled in the same enterprise app (ear), the spec says the ejb tier classes will be visible by the web tier. Anyway, per your more current problem, again, I need to see the relevant sections of your ejb-jar.xml, jboss.xml and the code that is doing the lookup. Also, are you making use of ejb-local-ref's? You should be. Also, are you using any code generation tools, like XDoclet? Just trying to understand how your app is glued together... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4031584#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...