The validation is okay at a cursory glance. If the Trivial Script doesn't work, you'll have to fix the shortcuts that the installer made; both the 1.1 and 1.2 shortcuts are bugged. See the frequent issues.

As it's asking for the CD, perhaps you should try to put the CD in?

The background script is not something you need to concern yourself with right now, as you need to get the game working before you can start that. You start it by listening to your advisor in-game.