Help? (in-game face-pics not displayed correctly)

[Alblaka]

I have an similar issue upon playing on my W7 Laptop. Though, in my case only a few sprites look distorted like this or are mis-read (f.e. a few sprites have the casual green outlining you can see in some modded spriteheets).

For me it wasn't too annoying, though, thus i did never waste time on looking for a fix