cmc connection help!

sorry noob question. So I am using Nuendo 4.3 and have some of the cmc’s i picked up yesterday. (2 of the cmc-fd’s and 1 cmc-ch). install fine, nuendo midi port recognizes them…but i can’t seem to get them recognized device wise. any ideas on how i can fix this? don’t want to have to return them. the closest i got was selecting yamaha 1x’s and it was giving me basic fader control and the cmc-ch was letting me mute and arm the track and select differe tracks and banks (but no lights on the buttons except the faders basic lighting and the shift, and channel toggle keys will light when you touch those.) any help would be greatly appreciated.