Vista solution

[Sonny WiFiHr]

For anyone with Vista problem here is solution if you have reinstalled game or SS 6.1.and have CTD-s

Unistall whole game (recomended) or mod
Go to start menu (windows logo) - All programs - accesories - command prompt.
In command prompt type regedit.exe.
Open HKEY_LOCAL_MACHINE
Open SOFTWARE
Open Wow6432Node
Look for SEGA
Delete SEGA or open SEGA - Medieval II Total War - Mods - Unoffical-then delete mod. You will recognise it by name (if you have remove only mod)

Restart computer (optional)
Install M2TW /kingdoms (not necesary if you only unistall mod)
Depends where you install game find SEGA folder.
Right click on SEGA folder
Click on Properties
Click on Security tab
Select System (in window) then click Edit (box)
Select Full control (little box)
Repeat this for everything (you can exclude other users if you like)
Apply

Do same with mod installer (right click on installer and repeat steps before)