@Dogfish40
If you're running Win-7 there may be a conflict between SH3 Commander and either or both of the system files Rundll32.dll and Gameux.dll.
The fix is relatively simple, there is an entire thread on the issue here:
https://www.subsim.com/radioroom/sho...d.php?t=241470
If that's a TLDR thing for you then one fix buried in the thread is here:
https://www.subsim.com/radioroom/sho...5&postcount=34
Good luck.
-C