Garrys Mod Dedicated Server not working

[Grovyle]

So, I was all like "Dude the Setti servers has just a few servers I will do one myself", then I went to garrysmod folder and copied garrysmod (which is at garrysmod folder, confusing huh?) to source dedicated server folder, I start the application to start Garry's Mod Dedicated Server, then I select game Garry's Mod, Map gm_flatgrass_revolution, max players 8, set RCON password (which I won't tell lol), UDP Port 27015 and Valve Cheat-Secure.

But when I do "Start" it brings up an error that says something like this:

MountFilesystem( 218 ) failed: SteamMountFilesystem(5376,218,0x139fd64=,0x1395fc54) failed with error 5: No Steam Content Servers are avalible


I press OK but it says same thing, I press OK again and it closes.

Help plz?

[Kessu]

Maybe your firewall blocks it?

[Grovyle]

Maybe your firewall blocks it?

It doesn't.

[Omri]

It has nothing to do with the firewall but with the files, try reinstalling it I had the same problem once too just with CS 1.6 Dedicated server.

[Grovyle]

I will try to make this straight:

I installed Source Dedicated Server, and it inclued Cstrike and hl2 folders, which contain files to do a server, and it didn't came garrysmod.

Then, I went to my Garry's Mod folder, and found 'garrysmod' folder, I thought "Well, if it had cstrike and hl2 folders, maybe this is needed to do a GMOD server", then i copied it to 'source dedicated server', then if i try to start a GMOD server it gives that error. :P