So I'm not entirely sure if I screwed at some point, but it seems that texture packs don't work correctly.
Right now, I'm trying to use both NMC for NV and NMC for FO3, but the end result looks really odd.
I installed FO3's NMC first, then NV NMC, and now I end up getting the Mojaves red ground textures in the Capital Wasteland. Every other texture is low res vanilla, aside from the distant rock LOD's which have a red texture from NV NMC. Is there anything I've done wrong here? I've done the steps many people have said to do, and they say it works perfectly.