![counter strike source pack gmod counter strike source pack gmod](https://i.ytimg.com/vi/pgrJKkcgsIE/hqdefault.jpg)
Almost all custom Garry's Mod servers require Counter-Strike: Source installed and mounted. If you've done everything above and still see errors/missing textures. (Default: C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\downloads\server) Open the "downloads" folder and then the "server" folder, Ctrl+A again and delete everything inside.(Default: C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\addons) Open the "addons" folder, Ctrl+A to select all files in addons and delete them all.(Default: C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod) Go to your Garry's Mod installation directory.Many of these game modes use maps, weapons, skins, etc for Counter Strike. However, if you want to play Trouble in Terrorist Town or any other multiplayer mode, I would recommend CS:S. If you just want to play around in the sandbox, then your other Source games will do.
![counter strike source pack gmod counter strike source pack gmod](https://steam-account.ru/img/product/c/css-garrys-mod-buy/garrys-mod-counter-strike-source.jpg)
If the above didn't work and you don't mind losing all your Garry's Mod workshop content. It depends on what you want to do with GMod.
![counter strike source pack gmod counter strike source pack gmod](https://media.moddb.com/images/downloads/1/28/27797/Map_Pack_CSS.jpg)
If not you may want to look into running those games or reinstalling them with gmod to try to get them to associate with each other. It will show an X no matter what if you're using a texture pack and that's fine usually, but if you have the games installed they should show up checked. Also while we're at it, check the little controller icon at the bottom right of Gmod's title screen to ensure "Counter-Strike Source" shows a check mark and not an X by it.