It's a long shot, but I recall from many many years ago, if the CDM radio had a passport card installed in it and it was not on a system or miss-configured, it would show as disabled. If you can read the radio with the software and look at the channels, make sure that use option card is not checked. There might be some other options that need to be looked at, but I can't remember now it's been so long. Of course it could of been disabled trough MDC or something else too.