Twilight Beta Testers: READ THIS
Suggestions for getting the most out of the game
from
GalCiv2 Forums
1) Uninstall the beta before installing the final
2) Go into my documents\my games and delete the Twilight of the Arnor (gc2twilight or something like that) folder so that you can start with fresh preferences.
Any other suggestions you guys may have, add them in the comments.