Garry's Mod uses two game content files: cstrike and tf. The cstrike file includes models, materials, textures, and sounds used in Counter-Strike: Source. The tf file includes models, materials, textures, and sounds used in Team Fortress 2. Many popular Garry's Mod game modes and addons require these files to function properly.
1. Log in to the BisectHosting Starbase panel.
2. Stop the server.
3. Select the Mods tab.
4. Choose Install next to Counter Strike and Team Fortress Files.
5. Start the server.