My game crashed 4 times in the Firelands raid on both normal and heroic. It happens right after you agro majordomo and alysrazor spawns. I have 0 addons enabled. Only happened since pre patch update.
ERROR #132 (0x85100084) Fatal exception
The instruction at “0x00007ff7d2644b5a” referenced memory at “0x00000000000000f2”, The memory could not be “written”.
Can confirm this also, when Alysrazor spawn and fly up, the game crash to windows and you have to restart and the raids works with no no problem, then you change to heroic. And same happens again with same error code stated as above.