Lastest version of Divide et Impera for Total War: Rome II. For Patch 12 beta of TWR2 ONLY.
Download the archive and extract "Divide_et_Impera.pack" into your "Steam/SteamApps/common/Total War Rome II/data" folder. Then, launch the game and use the Mod Manager to activate Divide et Impera.
You can also use Mitch's Mod Manager: http://www.twcenter.net/forums/showthread.php?618536.