Hmmm, I've been getting occasionaly crashes too but not sure which mod is causing them. After I crash, I get the same log error as you, except it's pointing to buildings from the Gigastructures mod instead of this one. Although honestly I'm not convinced that is the cause of the crash - having looked through, the same error appeared earlier on but didn't cause a crash.

[19:37:14][trigger_impl.cpp:1174]: Script Error: Invalid context switch [owner] from Iahulme IXd [planet], file: common/districts/zzz_00000164district_virtual_relay.txt line: 20, Scope:
type=planet
id=6493
random={ 0 3991148998 }
random_allowed=no

[19:37:14][trigger_impl.cpp:1174]: Script Error: Invalid context switch [owner] from Iahulme IXd [planet], file: common/districts/zzz_00000165district_virtual_organic_housing.txt line: 13, Scope:
type=planet
id=6493
random={ 0 3991148998 }
random_allowed=no

And the most recent entry in the game log is:

[19:38:02][effect_impl.cpp:20137]: [2213.2.1] Log command triggered from effect in file: events/gpm_operation_events.txt line: 6328. RELIC SUBJUGATION - On Becomming Subject: Overlord = FROM = Cartel of Nisshima, LTD --- Subject = THIS = Interstellar Parliament of Xeltyxkind

I found that it was "Guilli's Planet Modifiers and Features" that did it for me, and I just disabled it and I had no further issues. I might have had to make a new game but I havent had the issue in any other games i have made. I dont know if there is some unknown conflict as I use 70+ mods but thats the solution I came up with. Hope it helps.

Hmm, yeah. Seems as if disabling Guilli's Planet Modifiers has fixed it for me as well. Shame - one of my favourite mods! but it was crashing every single game part-way through the mid-game period.

Same here. I just hope the issue is fixed somehow.

Mine crashes on the second of Feb after every new game. Crash log looks like yours but it's on an abandoned habitat.

I found that sometimes disabling customisation of guaranteed habitable worlds due to Planetary Diversity stopped some of my random crashes due to this mod.

I presume two mods were trying to modify the same system at the same time?