Weird error with OpenGL.

While making Icefield Volcano 1, I had crashes on OpenGL upon reloading the level, by the RETRY option or by dying. This error happened after I've put a ~PIT texture somewhere, I then removed it, and the level reloaded succesfully.

Is there any error with the ~PIT texture or something? This may also be the cause of OpenGL crashing in Egg Satellite.

OpenGL crashes with ERZS simply because of a bad nodesbuild, that's already been explained in the Bug reports thread for it.