When you extract the mod, the path name should be something like this: (C:\Program Files\SEGA\Medieval II Total War\mods\teutonic).
Inside the teutonic folder, there should be (at minimum) these folders:
- Data
- Packs
- Preferences
And these files (at least):
- COH.ico
- Warhammer.bat
- Warhammer.cfg
I hope this helped