Mac Client Sudden Crashes: Error code 0x85100086

Hey all -
I've been playing for about two months on mac with no issues, but in the last two or three days my client has been crashing at random intervals with no real rhyme or reason. I've lowered all of my graphical settings to the bare minimum, have nothing else running, and have deleted my WTF, Cache, and interface folders before running it again. I get the same error every time:

Quote:

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Exception Raised!

App: /Users/x/Desktop/Wrath of the Lich King 3.3.5a (Mac)/World of Warcraft.app
Exception: EXC_BAD_ACCESS
Error Code: 0x85100086
Time: 2020-05-20 14.51.08 PDT

Error: EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0xff2a3563
Registers:
eax = 0x2cf123c0 ebx = 0x2cf123d0 ecx = 0x00000004 edx = 0x00000010
edi = 0x2cf123c0 esi = 0xff2a3563 ebp = 0xbfffe0a8 esp = 0xbfffe0a0
ss = 0x00000023 eflags = 0x00010202 eip = 0x9a9c0892 cs = 0x0000001b
ds = 0x00000023 es = 0x00000023 fs = 0x00000000 gs = 0x0000000f
Crashed Thread: 0x00001607
========================================

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I can't for the life of me figure out why it suddenly is having such a hard time. I haven't changed any .mpq files since I first installed it. Any suggestions would be greatly appreciated.

I did a fresh install of the game and figured it has something to do with my .mpqs. I installed finsternis' creatures and leeviathan's character models and removing them helped immensely - the character pack in particular caused more crashes than anything else. They still happen but are much less frequent - from a crash every 5 minutes to maybe once or twice an hour.

What I'm confused about is why it's happening - I have been using the same .mpqs for the nearly 2 months i've been playing... I redownloaded them to see if they had corrupted but to no avail. Tried the warmane official WoD skins and they caused crashes as well. :/