Multiplayer Coop Crash - Assist Ally when Declining Demand/Threat

Phoenixwarrior7

Repeatable crash. Steps to repeat:
1. Play coop campaign IE (both players on the same team).
2. AI faction demands money from Player 1.
3. Player 1 declines, causing Player 2 to automatically be prompted to join war on their side.
4. Player 2 clicks "Enter War on Side of Ally", game immediately crashes for both players.

We tested this several times (since the AI didn't always make the same threat). The crash only occurred when entering in war on side of ally after a demand for money/threat. Normal war declarations did not cause the crash to occur. The game crashed irrespective of which player was threatened. This bug did not occur before patch 2.1.

Since coop allies cannot decline the request, this nearly softlocks the campaign (technically we could keep restarting every time someone threatened us, or even accept the demand, but those aren't acceptable solutions).

For reference, we were playing Greasus and Azhag.

Dxdiag and mp_log are attached.

Sir_Travelot

We've been having this crash occur when someone makes a diplomacy offer to an AI faction while another player is viewing that faction in diplomacy also.

It was occurring for us prior to 2.1.

We avoid it happening during our turns by ensuring only one player is doing diplomacy at a time.

Phoenixwarrior7

Sir_Travelot said:

We've been having this crash occur when someone makes a diplomacy offer to an AI faction while another player is viewing that faction in diplomacy also.

It was occurring for us prior to 2.1.

We avoid it happening during our turns by ensuring only one player is doing diplomacy at a time.

Interesting. It may be a different but related issue. In our game, we were able to declare war, join ally in most situations without issue. It was only when joining an ally's war after a demand from the AI that a crash occurred.

Crocuta

Having the same/similar issue. Whenever a demand is declined the game crashes for everyone. Guess the demand isn't "Give us money or we declare war" but rather "Give us money or we crash your game!"

SDDOpi

Me and my mate created a mod to disable threaten / ultimatums for now. Seems to remedy the crash.

No AI Threats - Fixes MP Crash (Patch 2.1)
https://steamcommunity.com/sharedfiles/filedetails/?id=2860972620

Phoenixwarrior7

SDDOpi said:

Me and my mate created a mod to disable threaten / ultimatums for now. Seems to remedy the crash.

No AI Threats - Fixes MP Crash (Patch 2.1)
https://steamcommunity.com/sharedfiles/filedetails/?id=2860972620

You sir, are a life saver.

Thanks!

Mactalon

This issue is ongoing for the three player game we have going as well.

TheSilentFoxyn

SDDOpi said:

Me and my mate created a mod to disable threaten / ultimatums for now. Seems to remedy the crash.

No AI Threats - Fixes MP Crash (Patch 2.1)
https://steamcommunity.com/sharedfiles/filedetails/?id=2860972620

Thank you for this, me and my buds looked one day too early for this it seems.

Took two threatens on us to figure out what the issue was and then had immediately gone looking for a mod but none existed at the time

Delusionist#2224

I've also had issues when both players did diplomacy with the same faction. Crash issues

GeT_SwErVeD

With this issue affecting co-op campaigns in 2.1.1, my friend and I have had to use the rollback beta to play the game together. FFA campaigns end up being consistently unplayable on all versions due to diplomacy desyncs after 50 turns or so (seems to be affected by number of allies/vassals).