Well, the server map that's on is the countrytrain, and whenever I get it from garrysmod.org it doesn't work..It always says "Missing map, diconecting" any help please..?
Did you put it in the Gmod/Gmod/Maps folder? This map probably isn't permanent anyways.
Are you getting V4? If it's not working from Gmod.org, try to get the one from FPSBanana. That one worked for me.