Disklavier

Has anyone been able to play a PianoDisc brand CD on a Yamaha Mark III.

I have a friend that has a Mark IV and he can play PianoDisc CD's but I 
have not been able to play them on my Mark III.  I was wondering if 
there was a problem with my player or only certin PianoDisc CD's will 
play on a Disklavier.
PianoDisc has some very nice selections but I don't want to spend money 
trying.
Maybe only older ones or newer ones will play?????
Thanks
Alan