Yesterday i started play Garry’s Mod. While starting the game, Steam said something like “Steam has to configure the game to improve performance and need internet connection” Well after this was done… Downloading 2Gb of stuff. I got folder named Garry’s Mod 13 old and the new. I moved addons from old to new but the problem now is. I have HL-Ep1/2, Portal 1/2, CS:S. Only CS:S and Portal 2 works in Gmod. I need these all to work because now all is purple/black.