Disklavier

I just got a Yamaha 4'11" grand with a super Disklavier on it which I am loving.  But after recording a piece on it and playing it back, the damper pedal is not being recognized?!?  I can see the damper pedal going up and down *a bit* when it plays back but for all intents and purposes, it's as if I had played WITHOUT the damper pedal at all, which was not the case.

Is there something I am missing?  I asked the person I bought it from and he said he was not familiar with this problem and suggested I format a new disk and try it again, which I did with the same results?

Thanks,
Jon