Extracted images appear as tiled pieces

[AMAAAAAR]

How did you convert the GXT files? Also, would you be able to give me some of the unconverted files? I just want to see if I can do something about the image conversion.

I used a program called GXTConvert: https://github.com/xdanieldzd/GXTConvert

Here's the unconverted files: https://drive.google.com/open?id=0BzzcZC...2NUalVLM00

Thanks for your help so far