There was a corrupted map that i had that screwed up all/most shaders from default maps because the author had included the shader files in his pk3. I forgot what it was called so i guess i'm no help. Although the shaders work perfectly when running the map itself. It's just that i couldn't play default maps while it existed in my directory. I deleted it.
Also there's a map which doesn't belong on tremulous called z-lan-party.pk3 or something like that. I think it was meant for quake or urban terror and was missing things like spectator camera spawn positions. I've also deleted mine obviously.
