So fairly modded game. Decent spec PC, TPS and FPS have been fine, minimal conflicting errors.

Ive been able to reproduce the error and work around it.
When sending caravan off to settle in a new tile the game will start a world gen then after a few mins crash. Famous Error generating world from alpha days.
Only work around i found was to unload simple sidearms, gen the tile and, save and reload the mod.

Error log here

https://gist.github.com/HugsLibRecordKeeper/175aa8721e273693eab791ccc8a20bb6