Repeated client crashes on Frostwolf when starting WoW

About 1/3 of the time when I try to play on Frostwolf, my client crashes when I'm logging onto a toon. I got this error message tonight:

This application has encountered a critical error.
Error #132 (0x85100084) Fatal Exception!
Program: Wow.exe
Process ID: 10168
Exception: 0xC000005 (Access_Violation) at 0023:00ECA3BD
The instruction at "0x00ECA3BD" referenced memory at "0x53494C6B".
The memory could not be "read."
Press OK to terminate the application.

Any ideas what is causing this and how to fix it?

I dont know where the Problem is but i try to help.
What Addons do you use?

First you should clear your Chache, and see if it helps.
If not you can try switch DirectX 9- to DirectX 11 ( or DirectX 11 to DirectX 9) and see if this helps.

If not send me your dxdiag.txt and i take a look at it.

You got the Error-132, here is a guide to fix the Error-134 and Error-132 ( so yours): http://forum.warmane.com/showthread....79-Error-codes,
That said are you using the MoP with Wod model? if yes, try to use the WoD "old" from here https://www.warmane.com/download in case you are not able to fix your problem

Thanks for the help, guys.