Symbolically link your propper materials and models folders to your tf folders.
What it does:
It will make it so all your textures and models are all in 1 folder.
How to:
Delete the materials and models folders in your propper folder
Run command prompt as an Administrator
Type the following:
mklink /D <propper folder\materials> <tf folder\materials>
mklink /D <propper folder\models> <tf folder\models>Done
Example of my setup:
mklink /D "G:\Program Files (x86)\Steam\SteamApps\sourcemods\propperconfiguration\materials" "G:\Program Files (x86)\Steam\SteamApps\common\Team Fortress 2\tf\materials"If any part of the file path has a space in it, put quotes around the entire thing.
What it should look like:
Much better guide:
http://www.howtogeek.com/howto/16226/complete-guide-to-symbolic-links-symlinks-on-windows-or-linux/