Downloaded Backup Boot Camp without problems and registered the product. Opened the program aand saw the window with Source (Bootcamp) and Destination. Clicked the Backup now button and gave the Destination file a name. When starting backing up, I saw, only for a short moment, the window with the source and the Destination file with a large blue arrow in between. But, almost immediately, a window appeared with a yellow warning sign and the text: Error, Can't open/create file. What mistake did I make?