Principia + Event Horizon crash

[Axelord FTW]

Can anyone tell me why I'm crashing? I'm doing a slow, iterative mod build for a new career with Principia, and this is where it hangs. Kopernicus by itself does fine, but adding EH kills the game completely on loading a very-fresh save.
https://www.dropbox.com/s/vb1k4mxr3k0jynj/Player.log?dl=0
https://www.dropbox.com/s/d4vuz0xvu4jkpv5/KSP.log?dl=0

EDIT: To add, I've been running EH on another install without issue, but I've created a new fresh root KSP install (steam) to switch to Principia. As far as I'm aware, it's those two mods not playing nice together. EH's page says it is 'stable' in Principia, but considering those two mods also play on the same field, it's  kinda obvious stability is an issue. I can put EH on the backburner, since I'm obviously not gonna go there anytime soon, but it's by far my favorite planet pack.

EDIT2: I've somehow fixed my problem. Like most KSP issues I've had, I don't actually know how I did it, but Principia is working with EH (and OPM) at the moment without issue.

Edited December 2, 2021 by Axelord FTW