Assuming you are running as administrator, and since it apparently has been working up until you re-installed, I can only conclude your system registry doesn't contain the expected information. I recall one other report of problems with AIFP after converting to Windows 10, but I believe that issue was due to inadequate Windows permissions.
I don't use Windows 10 (and don't plan to convert any time in the near future), so I can't do any first-hand testing. I will, however, take a look at the code - when I get a chance - to see what else other than registry errors might be responsible.
In the meantime, anyone else feel free to jump in.
Don