Have you rebooted since you installed the game? That is usually the problem for those who get this issue.
If it is still like that after you reboot, go to C:\Program
Files\Stardock\Totalgaming\GalCiv2 (or wherever you installed the game
at), open the debug.err file you find there in notepad, and copy/paste
the contents into a post here.
You should also grab the latest patch from the downloads page, since you're running v1.0.