Hi! I'm new to gmod10, and i downloaded this: http://www.garrysmod.org/downloads/?a=view&id=55375
but i cant install it. I've added the folders to garrysmod/addons, but i can!t use it ingame. I've found this text: Won't be active unless the following GCFs are available and are mounted, but i dont know wich cfgs it is about.
You need to check GMod Options in Gmod (not Options, GMod Options are other options, weird innit?) And then select the games GCF's that need to be mounted. GCF are archives that hold the game content on the Steam platform.