[2023] Can only play ironman save while running as administrator

Actually, running our games' .exe files as Windows Admin usually causes problems, not fixes them!

I was able to run that save on my Mac perfectly fine. Do you have access to any other computer to test this on?  

What if you make a new Windows user on this machine and log into it with that - do you get the crash again or it is okay like that?

General logs are in your Documents/Paradox Interactive/Stellaris/logs/ folder , there may be crash folders under your Documents/Paradox Interactive/Stellaris/ folder too, depending.