[@Gary] Thanks, you just wrote a full chapter in thee book on “How to Lose Customers”. I hope Nero and other publishers see your post and ask themselves where they will be when the last customer leaves. The other comments before yours pointed out many other issues. Some might be caused by user or PC config, but a good install process should prevent such issues or at least explain what caused failures. Of course, offering software that’s worth buying is a good starting point. At least they offer a chance to chose where to install.