I am not a Network Adapter expert, but since the experts have yet to respond, I will give it a shot. I couldn't find any documentation about it, but it appears to be as you say. I looked at code that decides whether to run as a console app or windows forms based on whether any feeder names were on the command line. Did you use quotes around any feeder names that have spaces? I didn't see any support for "--help" or anything like that.
You might also try contacting Technical Support.
Doug - I was able to get it to work. The format is:
"C:\Program Files (x86)\Miner and Miner\ArcFM Solution\Bin\NetworkAdapter.exe" AIRPORT
The argument can either be a substation or circuit.