@Uveso just confirmed that Full Share on with AIx: Uveso Rush and AIx: Uveso Adaptive, killing one enemy ACU does cause the game to crash. With Full Share off, it doesn't crash. So. Full Share seems to be the culprit.

@Uveso thank you again for looking into it.
Would you like to join us for one of our games against the AI? Would you being in a game when it crashes help identify the problem? We normally play in the evenings CDT (UTC-5).

@Uveso thank you again for looking into this.

Is it possible for a UI mod to cause other player's games to crash? I'll run without UI mods for now just in case, but nobody else in my group uses them.

Also, we've been playing with a few non-standard game options. AI cheat/build multiplier at 1.2, Share Unit Cap at Death: Allies, and Share Conditions: Full Share (full sharing of resources and units at death). Full Share is something we turned on recently, could that possibly be the culprit? Sounds like the function TransferUnfinishedUnitsAfterDeath might be related to that option being turned on. Did you play/test with multiple humans and AIs and with that game option turned on?

We tried a few more games tonight and we played with all our normal mods, except we changed Share Conditions: Full Share back to the default which is Share Until Death. We didn't see any crashes in this game when we killed the AI ACUs. So, my guess is that the crashing has something to do with Share Conditions: Full Share.

@Uveso thanks for looking into the problem I reported.

The dual mod locations is because I'm using the fallback location for the FAF Client so it stores them in C:\Users\jchamlin\Documents\My Games to match what my friends use. I wasn't using it at first, so there was copies of mods in the C:\ProgramData\FAForever\user directory as well, but I compared them with Beyond Compare folder compare and what was in there was binary identical to my Users directory. I just removed C:\ProgramData\FAForever\user to just make sure it is clean. I'm pretty sure this isn't the problem though, the other players I play with also all crash at the same moment. I don't have their game logs to upload though. Next time it happens, I'll try to gather the Error screen and game logs from all players.

We've been playing humans vs AI games, with mods, for a long time without issue. We usually take a long time to get out from under the assault of the AI and gather up a large enough attack force to go attack and kill the AI ACUs, so a lot of game time elapses between when we start and when we kill our first AI ACU. However, since about the time we updated to the FAF Client 1.4.2, when we kill an AI ACU, the game will crash for some (or all) players. It happens pretty reliably on the first AI ACU kill. The first time, 2 of the 4 players crashed, and the second time, 2 of 2 players crashed. We launch with the FAF Client lobby, and we use a few mods (and have for many years without issue):
AI-Uveso
BlackOps FAF: ACUs
BlackOps FAF: ExUnits
BlackOps FAF: Unleashed
Flying engineers - Slow Speed
Hive Engineering Stations for All
Ninja Reclaim Drones
Resources x2

The error we are seeing when it crashes:

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at address 0x0067aa5f
attempted to read memory at 0x00000000

Program : C:\ProgramData\FAForever\bin\ForgedAlliance.exe
Cmd line arguments : /init init.lua /nobugreport /log C:\ProgramData\FAForever\logs\game_14001564.log /gpgnet 127.0.0.1:17552 /mean 671.853 /deviation 191.512 /savereplay gpgnet://127.0.0.1:5839/14001564/jchamlin.SCFAreplay /country US /clan CKA /numgames 34

Callstack:
Unknown symbol (address 0x0067aa5f)

I've attached a copy of the full game log from my computer:
game_14001564.log