CHIRP

I have been using CHIRP quite happily for the past 3 or 4 years to program both a BaofengV5R and 2 ICOM - IC-2100H radios. The time I programmed the IC-2100 was in 2015. I recently tried to add some freqs to the 2100 and got the following error message: "Failed to communicate with the radio: Unexpected response from radio" when I try to download from, or upload to, the radio. I have tried in 2 different Windows 7 boxes and Mac running the most up to date version of El Capitan. I am using a Valley enterprises FTDI OPC-478 cable which gets recognized by the OSs and is firmly seated in the jack. I have used the same cable to program my IC-2730 using the Icom software so I am reasonably confident that it is not the cable. A copy of the latest debug log is attached. I rolled CHIRP back to an earlier release (0.4.1) but get the same error message. I am wondering if someone has a clue as to what has happened. Thanks for any insight you can provide.