If nothing came up in GamesDB that could mean the game doesn't exist in their Database. If there was an Error for the GamesDB, instead of the name [GamesDB] Popping up it would be [Error]. Again, the problem you are running in to is normal, all LaunchBox is telling you is that there was an error when scraping and importing, would you like to still add your games to your library. Tell it yes. Some games may be missing images or metadata, so you'll either need to update that System selecting it on the left, going to Tools -> Download Metadata and Images or by updating them 1 by 1.