I think the best thing for you to do is to go to Big Fish Games and download the VV1 trial and reinstall it. Something has happened to your game, and a reinstall should fix it. You game should remain registered, since that information isn't deleted when you reinstall the game. If you want to back up your savegames first, see this post, which provides the location and file names. Copy those files to a safe place until you have finished reinstalling VV1.