Need help with the programming. I need to reprogram about 300 radios due to a programming error. I have the system key file, but it keeps erroring out, saying "No system key file having the same system parameters as configured for NXDN Trunking System Zone was found" We are using the same software, the same computer, and the same radios, actually the computer was not used since the last time we programmed radios last school year. LItterlaly nothing has changed.