Ok, ive been getting missing textuers alot for a very long time, and it was getting very annoying. So i downloaded all these textures for gmod threw this one site (not gonna give the link cuz iduno if steam will kick my ass for it lol) and all the textures i needed to download was from the games Half life2 Ep: 1 and Ep: 2, Counter Strike Source, and Counter Strike globle Offence. Bit im not what textures are needed for gm_tornado_nightfall because the train station and the train are still missing textures. So i really dont know whats going on.