Delete what's inside addons and maps except default maps (?)
The reason I want to reinstall is that I can't find the sounds for the original zombie because I accidentally replaced them, and when I Tried to port zombie master stuff to Gmod, I got everything working except the combine prison guard, and the metrocop have black and red on their suits, also all npcs die on the first hit, damage cannot be caused by headcrabs, I can only kill myself with explosives, Antlion worker, hunter, and I don't know how to fix it.
