Issue starting PoMoCo

I’m trying to run PoMoCo for the first time but having a bit of trouble. When attempting to run PoMoCo.py, I receive this error:

Has anyone encountered this before? I saw an old issue post on the Hexy github, but a solution was never posted. I’m running Windows 7 x64, Python 2.7.3, and PySerial 2.6. Servotor32 2.0 is installed on my bot.

I see you didn’t ran “PoMoCo.py” instead of “python PoMoCo.py”. Does running “python PoMoCo.py” change the outcome?