Honestly, you took so much time doing all this and didn't took a little extra to look into the technical subforum?
The right advice comes from Hax, forget the C:\ thing and look into the https://forums.totalwar.org/vb/showthread.php?t=103681

You should now install EB 1.2 into your RTW folder, apply the fixes (from my sig) and have fun playing EB!

XSamatan