Hi all, I have a problem with an application running in JBoss-4.0.3SP1. The tested the application under JBoss-3.2.1-3.2.7 and everything works fine. In JBoss-4.0.3SP1 only the deployment of the application works fine. When I execute an action (for your information the application uses struts-1.0.2) then a ClassCastException: $Proxy76-Error appears. Can it be a problem with the InitialContext.lookup? ... try { InitialContext ic = new InitialContext(); OSHome oSHome = (OSHome) ic.lookup("OSHOME"); } thanxs delta296 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3975350#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...