Ah, gotcha. I'll try installing BE and see what comes up on my end of things. Would you also be able to send over a copy of your system info log from MCCC?
Edit: I installed BE and still didn't have any warnings or LEs on game start, and no issues with that file during gameplay. I may need both the system info log and sim info log from MCCC to diagnose what's going on (MCCC -> Sim Commands -> Logging Commands, the file will appear in your MCCC folder).
Also, if you use BE to check for conflicts, do you see any conflicts with AR files?