Distributed Objects (newbie)

Hello All

I wonder whether anyone can just give me a hint as to where I'm going adrift with my code.
I am new to Cocoa, learning fast, but just have this wee problem:

I want to vend an object on one Mac and be able to message it from another on the LAN.

In my 'server' app, I use the following code to establish a connection:

-(void)awakeFromNib {     NSSocketPort *port = [[NSSocketPort alloc] initWithTCPPort:60000];    NSConnection *connection = [[NSConnection alloc] initWithReceivePort: port                                                                 sendPort: nil];        RemoteControl *remCon = [[RemoteControl alloc] init];            [connection setRootObject:remCon];

RemoteControl is a custom class in my 'server' app,  remCon is an instance of this class, and the 

port does open correctly and can be seen to be open on the network.

In my 'client' app, I have the following code:

- (void)awakeFromNib {

    NSSocketPort *port = [[NSSocketPort alloc] initRemoteWithTCPPort:60000 host: @"192.168.1.2"];

    if(port != NO) {

        NSLog(@"Port Setup %@\n\n\n", port);

    }

    NSConnection *connection = [NSConnection connectionWithReceivePort: nil sendPort: port];

    if(connection != NO) {

        NSLog(@"Connection Setup %@\n\n\n", connection);

    }    

    NSDistantObject *remObject = [connection rootProxy];

        NSLog(@"Connection Setup %@\n\n\n", remObject);

    [remObject retain];

    [connection retain];

    [port retain];

}

- (IBAction)remFill:(id)sender {

    [remObject fillField];

}

Whenever I try this out, I get the following error on the log:

2010-04-23 16:08:31.547 client[5717] *** -[NSProxy doesNotRecognizeSelector:fillField] called!

Now, my 'server' object (Controller) DOES respond to the fillField method when it is called

from a button on its own interface, but not when trying the remote call from another Mac.

Am I doing something really stupid ?

Thanks in advance.

Chris