Mount CS:S Content on Your Garry's Mod Server
Many popular Garry's Mod maps and gamemodes rely on Counter-Strike: Source assets. Mounting CS:S content prevents pink checkerboard missing-texture errors on those maps. For additional addon management, see Add a Workshop Collection.
Steps
1. Log in to the Game Control Panel and navigate to your server.
2. Stop your server if it is running.
3. Click the Non-Workshop Mods section of the game panel.
4. Locate the Mount CS:S Content entry and click Install on the right.
5. Wait for the installation to complete, then start your server.
CS:S textures and models will now be available to maps and addons that require them.