If it crashes on all maps that use T4M then Call of Duty World at War is not using the T4M .dll file. You might have it in the wrong folder or place. Double check and make sure it's in the correct folder. Here ...

Make sure you download T4M in the original post and put the .dll file into your games root folder. I explain it in the original post on how to find it the easy way. T4M allows the game to exceed it's limits so ...