I thought this was no longer needed since jdk support dynamic proxies. Probably the classpath does not have the org.jnp.server.NamingServer. What jars are in the test classpath? "java.rmi.server.UnicastRemoteObject javadoc" wrote : | For the constructors and static exportObject methods below, the stub for a remote object being exported is obtained as follows: | | * If the remote object is exported using the UnicastRemoteObject.exportObject(Remote) method, a stub class (typically pregenerated from the remote object's class using the rmic tool) is loaded and an instance of that stub class is constructed as follows. | o A "root class" is determined as follows: if the remote object's class directly implements an interface that extends Remote, then the remote object's class is the root class; otherwise, the root class is the most derived superclass of the remote object's class that directly implements an interface that extends Remote. | o The name of the stub class to load is determined by concatenating the binary name of the root class with the suffix "_Stub". | o The stub class is loaded by name using the class loader of the root class. The stub class must extend RemoteStub and must have a public constructor that has one parameter, of type RemoteRef. | o Finally, an instance of the stub class is constructed with a RemoteRef. | * If the appropriate stub class could not be found, or the stub class could not be loaded, or a problem occurs creating the stub instance, a StubNotFoundException is thrown. | | * For all other means of exporting: | | o If the remote object's stub class (as defined above) could not be loaded or the system property java.rmi.server.ignoreStubClasses is set to "true" (case insensitive), a Proxy instance is constructed with the following properties: | + The proxy's class is defined by the class loader of the remote object's class. | + The proxy implements all the remote interfaces implemented by the remote object's class. | + The proxy's invocation handler is a RemoteObjectInvocationHandler instance constructed with a RemoteRef. | + If the proxy could not be created, a StubNotFoundException will be thrown. | | o Otherwise, an instance of the remote object's stub class (as described above) is used as the stub. | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191023#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...