When 2.4 came out I was plagued by crash after crash in BGs, nowhere else (not even arena), but in BGs I'd keep randomly having the screen go blank and then the game close. Completely random, no pattern to be seen, some games I'd have no crashes, others I'd crash every other minute, some crashes came when I was in a big fight, others when I was just sitting on def doing nothing. I've been tearing my hair out trying to track down what's causing it, and eventually found that by disabling all out of date mods it went away.
I've run for 3 days with no crashes, so thought I'd try enabling mods one at a time and see what happened. Censusplus was first on my list, and the very first AV I did after enabling it, I crashed

AllPlayed
Atlas
AtlasLoot
CT_Core
CT_MapMod
Deadly Boss Mods
Decursive
EquipCompare
GFW_Levelator
Grid
GridStatusHealingReduced
Itemrack
Recap
Scrolling Combat Text
SellFish
UnitButtons
Running a fairly minimal addon collection till I fix this crashing, have had all BG mods (including KillingFields) turned off since it started, but no luck. I'm still hoping that crash tonight was a one-off and it's not C+ causing it, but it was identical to the previous crashes, and that is not a type of crash I usually get; normally if WoW wants to crash for me it'll freeze up, not just close. Going to test more after some sleep, just thought I'd post now and see if anyone else has any similar issues or suggestions!