Good day,
I just reinstalled PF3 into a a complete rebuild from the OS up. When I launch PF3, I get the errors in the screenshots below. When I run Pf3_reg, I go back in and it gives me the hotkey error. When I relaunch P3D, it gives me the "run pf3_reg" error again... and so the cycle continues.
I've re-installed FSUIPC5 (I had not had it installed before PF3 - I have no other addons that use it)
Logs attached
Running:
Win10
P3Dv4.1
PMDG 777
PF3
MyTraffic (xml addon method)
and a few add-on sceneries