Hello Manfred,
We're sorry to hear us about this problem.
Please note that such issues need to be reported to our dedicated support team for fast technical help:
http://www.reviversoft.com/de/driver-reviver/contact-support/
But we have taken note of your concerns here and called one of our customer service contact you personally and help you.
You can expect to soon hear from him and he will help you to resolve the problem to your satisfaction.
Sincerely,
James