Thats what Im getting

This application has encountered a critical error:

Not enough memory resources are available to process this command.

Program: C:\Users\Robert\Downloads\Wrath of the Lich King 3.3.5a\Wow.exe
File: .\MapMem.cpp
Line: 558

Requested 1705688 bytes of memory

I used to get WoW error be4 disabling WoD models. It started again few days ago. I tried to delete cache but it didnt help. Thanks in advance for any help.