Everytime that I tried to verify a backup I kept getting the error E00070020 'The Archieve is corrupt'. After reading all these post I thought that I would try something. Here is what I found. After running TI 8.0 for a year or more I upgraded to 9.0.3677, and that's when the problem started to happen. I un-installed and reinstalled TI 9.0.3677 tried again and had the same error message. I am running an AMD 2600 with a standard processor speed of 1917GHz. I have it overclocked to 2150GHz and have had it that way for quite a while. I reduced the clock speed back to standard. I rebooted and ran a backup of my C: drive to a USB external drive. I was then able to verify the backup without problem. The problem was solved. To prove my problem, I reversed the above procedure and the problem returned. For some reason TI 9.0 recognizes that the processor is not set right Can someone explain that?