What does the comcast reference code: S0a00 mean? I need help with the...

...new Motorola DCT3416 I picked up? I just connected the new DVR dual tuner into my hdtv, I plugged in the hdmi, have the cable cord from the wall into the "rf in". The box is plugged in and only channels 1-4 appear and they all have the "One Moment Please" "This channel should be available shortly." on them
"Ref code: S0a00"
Please help!