Critical error: "There are not enough memory resources to process this command."

Hi,
From few days I have problem in game with error like in title. I play on WotLK in Icecrown. When I'm in Northrend sometimes game crash, and I see communicat: "There are not enough memory resources to process this command.", and I don't why. Have a good component and earlier don't have this problem. In Dalaran I have only few seconds and later game crash, and it's very annoying. I start the game as administrator, but it doesn't help.
Also have communicat in this error: " File: .M2Shared.cpp, Line: 267", but that file doesn't exist in folder with game.
Have you any iddeas or solution for this problem, or only reinstall game?

It is because your system does not let the game take more than 2GB of your memory, and especially In Dalaran where everything is crowded.
- There is a tool called "Large Address Aware"

Okey, I download LAA, but it doesn't help. Now I have problem with LAA, because I can't change the WoW.exe to "True" in LAA options. Have you any idea why I can't change "False" to "True" in LAA?
Always has like in this screen: https://prnt.sc/BsoD3ZZsnLBF

Okey, I fixed that.
I don't unactive ALL folder with game with option: "Only to unread". When I unactive this option, I can change in LAA "False" to "True" in option.

Thanks for help :D