I recently installed the game; however, I'm not getting a main menu and thus can't do anything. According to the official FAQ, disabling the anti-virus should fix it. It didn't. I then tried reinstalling with the anti-virus disabled. Still no menu.
I'm using Avira Antivirus. I disabled the AVGuard component, which is the active scanning thing; however, avguard.exe is still in memory and the process cannot be killed. Is that's what is causing the problem?
I tried running the demo and it worked fine.
Also, antialiasing is disabled, and my GPU's not forcing anti-aliasing.
Windows XP Pro
Centrino Duo 2ghz
1 gig ram
I wish I had an answer to your problem, but, sadly, I am experiencing the same dilemma. I have a Studio laptop from Dell running Windows 7. No menu in the game...or should I say, "text". If you click around, you'll click on something invisible...invisible text. It is unfortunate. I have purchased 8 games from GoG, and only three of them work without any problems. The ones that work just fine are castles, castles II, and Praetorians.
Fallout 2 works with graphical errors. Conquest of the New World is extremely sluggish, making it unplayable. Arx Fatalis...obviously. And The Longest Journey has severe graphical errors. It was a lot of money spent on nothing.