Crash on Initialization - Mono.dll Access Violation

[oblivion2k]

Wanted to play Rimworld tonight for the first time in several months, looks like I won't be able to.

All drivers are up to date. Running 64-bit version of Rimworld, all previous topics I could find regarding Mono.dll crashes were old topics covering Out of Memory errors on the 32-bit version, so that's not what's happening here.

All of my mods are 1.0 compatible, and I unsubscribed from my unactivated B19 and below mods just to be safe, but it made no difference.
Log folder attached.

[attachment deleted due to age]

[k2ymg]

The log contains string 'AlienRace'. Some Alien Race Framework users reporting crash errors at Steam recently.

[oblivion2k]

An unrelated support thread further below mentioned deleting the Core Mod and letting Steam verify file integrity. I just finished doing that and sure enough we are back up and running.

The worst kind of fixes are the ones where you don't know the cause or the solution, but I'm back in the game.