Hello, I am using JBoss 4.0.4.GA and i have the following problem: I have two ears, - first contains the ejbs jar + the ejb interfaces jar. The ejb jar refers the ejb interfaces jar. - the second ear contains a war archive that refers the ejb interfaces jar file. it also contains the ejb interfaces jar file in root. I also changed the ear deployer.xml to have isolation and call by value set to true. when I try to acquire a reference to a stateful session bean located in the first ear from the second ear, i get a class cast exception: SEVERE: Error Rendering View[/view_server.xhtml] javax.ejb.EJBException: java.lang.ClassCastException: $Proxy90 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69) at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83) .... Caused by: java.lang.ClassCastException: $Proxy90 at org.nuxeo.os.delegate.EJBFactory.getServerOperations(EJBFactory.java:120) at org.nuxeo.os.delegate.BusinessDelegate.getServerOperationsRemote(BusinessDelegate.java:96) at org.nuxeo.os.delegate.BusinessDelegate$$EnhancerByCGLIB$$d66ac51f.CGLIB$getServerOperationsRemote$4() at org.nuxeo.os.delegate.BusinessDelegate$$EnhancerByCGLIB$$d66ac51f$$FastClassByCGLIB$$c53bdfc9.invoke() at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at org.jboss.seam.interceptors.JavaBeanInterceptor$1.proceed(JavaBeanInterceptor.java:80) basically after i've done some reading it seems it's a classloader problem. however, i need to separate the two ear files as they will ultimately be deployed on separate machines. Can you ples tell me how can i solve this? Razvan C View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3962408#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...