Java APIs

Hello,
I get a strange error message from my test rmi client. (Client is run on localhost, just for testing)
The exception is:

java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.net.MalformedURLException: unknown protocol: rsrc
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at sep.tukl.client.Client.main(Client.java:27)
Caused by: java.net.MalformedURLException: unknown protocol: rsrc
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
...
...

I cant find anything on google or in these forums about this exception.
Can anyone help me?

greetings
Raptor

Client

    public static void main(String[] args) {
        System.setProperty("java.security.policy", "java.policy");
        if (System.getSecurityManager() == null) {
            System.setSecurityManager(new SecurityManager());
        }


		try{
			Registry r = LocateRegistry.getRegistry(6666);
			
			DVMService h = (DVMService) r.lookup("DVM");
			System.out.println(h);
		} catch (Exception e){
			e.printStackTrace();
		}
    }

Server

private void startRMIRegistry(){		
		System.setProperty("java.security.policy", "java.policy");
		if(System.getSecurityManager()==null){
			System.setSecurityManager(new RMISecurityManager());
		}
		try {
			LocateRegistry.createRegistry(rmiPort);
		} catch (RemoteException e) {
			e.printStackTrace();
		}
}
private void registerRMI() throws AccessException, RemoteException, AlreadyBoundException, MalformedURLException{
	dvmservice = new DVMServiceImpl(this);
	DVMService d = (DVMService) UnicastRemoteObject.exportObject(
		dvmservice, 0);
		LocateRegistry.getRegistry(rmiPort).rebind("DVMService", d);
	}
 
    private void unregisterRMI() throws AccessException, RemoteException,
	    NotBoundException {
	LocateRegistry.getRegistry(rmiPort).unbind("DVM");
	UnicastRemoteObject.unexportObject(dvmservice, false);
	UnicastRemoteObject.unexportObject(registry, false);

    }

    private void startCodebaseWebserver() {
	try {
	    new NanoHTTPD(httpdPort);
	    System.setProperty("java.rmi.server.codebase", control.codebaseURL
		    + ":" + httpdPort + "/Server.jar");
	} catch (IOException e) {
	    Logger.fatal("ServerController : " + e.getMessage());
	}

    }