hmm i again jes realised that some of them were 24 bit but the reason was because i had put spaces in the textures names xD so yer i guess thats another rule bout em
Also, in the WAD textures don't work correctly unless they are sized 16, 32, 64, 128, etc. They have to be multiples of 8 or you will get either a black edge or the WAD won't accept them at all. The same applies for sky cubes and horizons.