Green textures when trying to use custom skins in 5.4.2

I found a patch here http://forum.warmane.com/showthread....D-Models-5-4-2 that allows me to use the HD models in 5.4.2, and it seems to work fine for the most part. (I can even use model WoD model edits and they will work just fine.) However, I'm pretty sure this is not part of the issue as the issue persists even after I remove the MPQ with the HD models.

The problems come when I try to use custom textures - the game seems to flat out refuse to use any textures I provide instead of the original HD textures inside the MPQs provided inside that link (the characters that had their textures edited are green), same result when I try to create a separate MPQ and put the skin edits there. Hell, even if I simply take the BLPs out of the MPQ, convert them to PNG with BLP2PNG and convert them right back to BLP without editing them, and then put them back in the same MPQ, it still causes green textures.

Kind of lost here. Would appreciate any kind of insight on this problem.

Also, it's worth a mention that WMV seems to read any textures I use just fine, it's just WoW that's being incredibly picky. However, it's incapable of loading all the geosets properly and the textures are all messed up.

EDIT: Before I forget, I converted all the textures from RGB to Indexed, still no dice.