I have put together the DarthMod 2.8 packfile without the entries for the Sengoku DLC so you having problems with starting the regular mod use this version.
Installation; Add the packfile to your Shogun 2 data folder and the user.script to your script folder found here C:\Users\Username\AppData\Roaming\The Creative Assembly\Shogun2\scripts .
As usual if you cant find your appdata then you dont have show hidden folders activated and must go to folder options and enable this first.