Soure Multi-Tool custom models not showing up?

I downloaded a SFM Fallout prop pack since there are no other packs. ( )
I put the files on the Source Multi-tool custom content file ( C:\program files (x86)\steam\steamapps\common\Source SDK Base 2013 Multiplayer\CustomConfig\custom )
I created a folder called “fallout” and placed the material, model and sound files there. But when I open hammer and go to the Fallout section, there are no models in the model list.

Any idea how to fix this?