Installation Instructions
If using the Steam version of the game follow the directions below-
Run the RTR VII installer like normal, changing the install path to xxxx/steam/steamapps/common/rome total war gold
Ignore the launcher and short-cut prompts, they won't work
Open Steam, right-click on Rome: Total War Gold in the My Games menu
Select Properties
Under the General tab select Set launch options ...
Type in -mod:RTRVII -show_err -nm without quotations and click OK
Launch Rome: Total War Gold by double-clicking it in the My Games menu
Select Barbarian Invasion from the two-choice list and Launch.