NPCs may not download on Garry's Mod (GMod) due to several reasons, including missing dependencies or required addons that are not installed. Additionally, the server settings or user permissions could restrict certain downloads. Corrupted files or an outdated version of GMod might also prevent NPCs from loading correctly. Lastly, network issues or server-side restrictions could contribute to the problem.
No because Garrynewman has not made l4d contact for gmod but if you type gmod in google you will find Garry's mod.org and click then type l4d and it shows l4d stuff
I deleted some last time, but I can't Rember what key I used...
No, you do not need to be on the game you bought with Gmod to play it although you do need to have the game installed to run gmod and i also recommend having the game Half-Life 2 installed to get most of the textures and weapons and npcs and props that go along with it.
gmod 9, yes gmod 10-no
piggymoo.com has all of stargate, but I'm not sure what gmod is.
Download the playermodel addon from the workshop
You need to download Gmod 9.0.4c when you start there will be 3 choose unmark the Gmod 9.0.4b and your set to go and play gmod 9 online.
I would recommend garrysmod.org
download them from garrysmod.org
download them on garrysmod.org, or port them mingebag
go to steam.com here are some links related to Gmod to help you: Steam: http://store.steampowered.com/ Download stuff to Gmod here: http://www.garrysmod.org/downloads/ About Gmod: http://www.garrysmod.com/about/ Gmod fourums: http://www.facepunchstudios.com/
go to garrysmod.org (Not all of the girl stuff)