Yes, I updated libs in the client classpath. I investigated org.jboss.aspects.remoting.InvokeRemoteInterceptor and found out that in the line org.jboss.aop.joinpoint.InvocationResponse response = (org.jboss.aop.joinpoint.InvocationResponse)client.invoke(invocation, null); "client.invoke()" returns Exception if the server side has thrown Exception. I replaced this line to: Object result = client.invoke(invocation, null); if ( result instanceof Throwable ) throw (Throwable) result; org.jboss.aop.joinpoint.InvocationResponse response = (org.jboss.aop.joinpoint.InvocationResponse) result; I'm not sure, that I did correctly, but it works :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4010387#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...