Textures problem on PAC3

Hello everyone, I am testing out PAC 3 and with this guide here ( https://github.com/CapsAdmin/pac3/wiki/In-Depth-Guide-to-Bringing-Custom-Models-and-Textures-into-PAC3 ) I am able to add custom models in PAC3. But the problem is the textures always because translucent checkered box everytime, regardless on whatever textures I use.

This is an example before I add textures

http://cloud-4.steampowered.com/ugc/22841758015034362/FAF787742A9753C4136A5E9F6A067889576D489D/

After adding textures…

http://cloud-4.steampowered.com/ugc/22841758015036347/3C2BEE294D328E79C8566CC0EB1E957666FAB885/

http://cloud-4.steampowered.com/ugc/22841758015037855/36BCE56B44A010104CD7CA56E85D177D53DEE990/

Is there anyway to fix this?
I would really appreciate any help. Thanks.

Use something other than Google Drive.