In order to install sourcemod and metamod plugins for your Left4dead 2 server, you will need to follow the procedure below.
Install Sourcemod and Metamod Plugins on Left4dead 2
Download and Apply Garry’s Patch.
Run the reg file depending on your OS. (32bit or 64bit)
For Vista Users
Run your game as administrator. (for that right click on left4dead2.exe, go to compatibility tab, and check the box “Run as Administrator”.)
In the same compatibility tab choose to run the game in XP SP2 compatibility mode.
Change the date to Oct 29, and timezone to Hong Kong (GMT +8).
Go here to make your vdf file. Make sure to choose the right OS and right game .
Extract Sourcemod.zip and Metamod.zip files to your Left4dead 2 game directory.
Place your Metamod.vdf file in addons folder of your game.
Do a quick file check.
(You should have sourcemod, metamod folders and metamod.vdf file in your addons folder. In your cfg folder, you should have a sourcemod folder).
Run the game, choose a map and then type in console “”meta list 1”. Now in chat box type “Admin” (without quotes)
If everything went as we want then you should see a menu popup, but you won’t be able to use it. To use the admin functions follow the Left4dead 2 Add Admin Function Tutorial.