MechWarrior 5: Mercenaries

MechWarrior 5: Mercenaries

Yet Another Mechlab
cszolee79  [developer] 5 May, 2022 @ 5:58am
Coop problems
This comment is from the main thread, I copied it here because it is indeed very helpful, and might fix weird coop problems.
If anyone else has something to add, do so!


VerboseLamp 6 minutes ago
@TheAngryPole

My group ran into the same problem and found that the issue would randomly (and retroactively corrupt even earlier, known-good saves on the same campaign. This is actually a vanilla bug that doesn't seem explicitly related to YAML.

Good news is that there's a workaround that takes this down from completely game-breaking to occasionally annoying. If your co-op partners can't access any of the tabs, you'll need to go run a mission by yourself. Any mission should work, and it doesn't matter if you actually complete it--you can drop and then immediately abort and it should still work. You need to do this solo because the co-ops can't access the drop menu to ready up, and any attempts we made for them to join mid-mission always resulted in them getting a Fatal Error crash.

Once you've run a mission drop, they should be able to reconnect to the game and access the menus normally. You'll take a rep hit for abandoning a mission, but this has worked for us consistently.

Mad Larkin 3 May @ 2:28am
I coop my friend's save doesn't let me join missions or access the real mechlab I get a bunch of blank space in the mechbay I can't access. Might be you might be the configuration menu mod. We're on the same version at least according to the main screen
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Showing 1-3 of 3 comments
Titan Longmane 26 Sep, 2022 @ 8:23pm 
in coop when ever i hit L for the lights it crashes me out of friends game. we all have all the same mods
cszolee79  [developer] 27 Sep, 2022 @ 5:25am 
You need the exact same versions for all mods.
Different mod versions cause crashes like that. Headlight specifically were changed in 0.30 so mechs can have "Spotlight" which increases the light intensity. I imagine someone is using an old mod version :)
The_Parthalonian 4 Oct, 2023 @ 9:21pm 
Hey cszolee79.
I absolutely love your 'Yet Another Mechlab' ... it brings so much value to this game, on so many levels.
But recently, my friends and I have tried to play COOP Career mode. At first, the game crashed for the host, we found the mod responsible and removed it.
Everything works fine until we load into the mission. All the guest players can HEAR the game, but no one can LOAD into the mission except the host.
We stripped it down to vanilla and started adding core mods, and found the culprit: 'Yet Another Mechlab' ... we were devastated. It's just not the same playing MW5 with all the vanilla feel, it leaves a bad taste in the mouth.

The host player has all the DLCs, we tested all the mods for compatibility issues, which took 2 weeks, adding & removing combinations in hopes that somehow we could get YAML to work.

We would much rather play career mode coop with YAML, than without it. Please tell me you have a fix or know why this is happening?

8th Inf Bge, 1st Inf Div, Can North Shore Regiment.
"Pro Jure Constans"
Cmd. E.B.


Originally posted by cszolee79:
You need the exact same versions for all mods.
Different mod versions cause crashes like that. Headlight specifically were changed in 0.30 so mechs can have "Spotlight" which increases the light intensity. I imagine someone is using an old mod version :)
Last edited by The_Parthalonian; 4 Oct, 2023 @ 9:31pm
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