IMPORTANT: This patch will fix the crash on startup for beta v1.4 and is required to play it.
- Unzip the .7z file.
- Place the "battle_models.db" file into the mod's "data\unit_models" folder and overwrite (i.e. "Medieval II Total War\mods\british_isles\data\unit_models". Do not put it in Medieval II\data\unit_models.
- Have fun!