Not exactly sure. I got

Code:
generic error:

Insufficient texture memory to load required texture set. (OWTTE)
I believe it was because some of my textures didn't have the most compressed compression type (BC1/DXT1) and I just had to re-save them. It was wierd though because I have 512MB dedicated texture memory and the textures couldn't have topped 10MB on that battlemap. If you re-save as BC1/DXT1 compression you should remove the error.