On JBoss4.0.4-CR2 I am invoking a Local interface method of a Bean which returns an object and I get the error. I'd appreciate any help in resolving this matter. Thanks java.lang.NoClassDefFoundError: org/jboss/serial/io/MarshalledObjectForLocalCalls I can't seem to find this class in any of the jars! The method called is: | public Bus getBusDetails(String busName) { | Bus a = (Bus)em.createNamedQuery("findBusForTail"). | setParameter("busName",busName).getSingleResult(); | return a; | } | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3974716#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...