I've tried different cds. The fact that the error message is there though suggests it's a problem with the actual cd player itself and not my cds.
I've tried turning it off and back on and it still comes up with the error message.
Will try and see if I can get it scanned on Vagcom for any errors, it has been to VW for a service since the error message has come up though and they never said I had any fault codes.