I just got a Mustek DVD-R and I am having problems playing DVD's and CD's. Each time I put a disc in I get a "Bad Disc" message. I have tried several discs, and didn't have any problems on our other DVD player, but can't get this to work. Anybody have any suggestions? Could this just be a problem with the hardware, or is this something I might be able to troubleshoot? Thanks. kj