Batboard

I am attempting to program an MTS2000 with RSS v6.04, but have been unsuccessful so far. It is the exact same software and RIB as was previously used to program the radio, but once I acquired it, I have been unable to get it to work. I have tried to read the radio, but every time i do, I keep getting either Checksum Errors, Timeout Errors and I also got a ACKed/NAKed Error. The radio does pass the Com check and i can get into the System Maintenance menu, but I cannot get it to read the codeplug.