So for some reason all of my vanilla weapons in morrowind have gone white. I thought that it meant that my textures had gotten deleted, but when I look they are still there. Weapons added by mods are still there. Any idea what is wrong?
EDIT: Turns out actually the mehrune's razor still has its texture, but that is a modded one.

Sounds like your texture files are corrupt. Try deleting all the vanilla weapon textures you see in your Data Files folder, and see if that turns them back to normal - or reinstalling whatever weapon texture replacer you use, if it worked all right before.

Although a little late on the reply, there's another time I've found white weapons when they shouldn't have been. Seems that the the engine if the extension is BMP file that's in a BSA archive it looks for DDS files instead. Usually I only had this happen when merging several mod's worth of images and textures.