I’ve noticed on a few gaming boards that several people are having problems starting up Witcher 2. They launch the game, see a wolf splash screen, then they’re either returned to the Launcher screen, or, if they launched with the .exe itself, the desktop.
The following GOG .exe file can help many of those with this problem. It can be downloaded here:
Happy gaming and good luck if you’re having problems getting Witcher 2 to launch — keep trying, it’s an awesome game.