Also for anyone reading, if your map textures slowly start to go missing even if you have the required games installed and mounted, go to the console and type "sv_cheats 1", then type "mat_specular 0". This should fix it.

@Vauxhat I don't have Half Life 2 and the map is still golden. CSS you might need though. Btw, is there a way to disable that 1940's radio music in the kitchen area? I tried removing the radio, but it appears that the music is a separate thing.

It worked, thanks a lot ! BTW great job on the map, I use it with friends to play criminal investigation, hope you'll make more maps in this abandoned-like style ! :D

@Pirouy This will usually occur if you are missing any texture files used within the map. Generally this will happen if you're missing content from games such as Half Life 2 or Counter-Strike: Source or just don't have them mounted to Garry's Mod. Outside of Counter-Strike and Half Life no other game assets should be needed in the map that I am aware of. The map also uses some custom texture and sound files, however I haven't heard of any other issue with them.

To fix the issue you should make sure that you have both Half Life 2 and Counter-Strike: Source installed and mounted to Garry's Mod. If any of the custom textures are missing then you might try re-installing the map. Otherwise I will endeavour to look into the issue further to see if there are any other problems with the custom textures used within the map.

I have some purple/black squares sprayed on some places of the map, how do you fix that ?
Other than that the map is great, I love the ambiance.