Textures in map are screwed up

I downloaded this map http://www.fpsbanana.com/maps/16570
It is one of my favorite roleplay maps and the custom textures are messed up.

You probably forgot to install the custom textures, check the download from FPSBanana again and there should be a materials folder with the custom textures. Stick that in the garrysmod folder and you should be fine.

the custom textures are packed inside the map

You need to own the game that has this texture… for example on rp_downtown_v2 i had the same until I installed CS:S and enabled it for Gmod. Goodluck

never mind i fixed it