Sometimes the preference file gets corrupted. Go to your folder, delete medieval2.preference.cfg , and launch the game. The game will generate a fresh, default file. You will have to reset your graphics settings, but this often clears stubborn errors.
Whether you're fighting for the Holy Land or simply trying to launch the campaign, here is the "story" of how to reclaim your empire from this technical abyss. 1. The Tale of the Overwhelmed Memory (4GB Patch) Modern computers have vast amounts of RAM, but Medieval 2 Sometimes the preference file gets corrupted
Navigate to: C:\Users[YourUsername]\AppData\Local\VirtualStore\Program Files (x86)\Sega. Locate the Medieval II Total War folder. Delete it. Restart your game. You will have to reset your graphics settings,
User Account Control often blocks the game from writing to its own preference files. Reinstall the game outside of the C:\Program Files (x86) directory (e.g., C:\Games\MTW2 The Tale of the Overwhelmed Memory (4GB Patch)
Find and delete (or move) and descr_geography_new.db .
Download the or 4GB Patch from reputable modding sites like ModDB.