I downloaded Paragon Backup and Recovery 10.2 Free Edition last week I ran a backup of my Windows XP system and it seemed to be successful. But when I did a "Check Archive Integrity" it failed. I got a list with line after line saying "Integrity error between sectors xxxxxxx and xxxxxxx." I have made several attempts with the same results. There is a variation in the number of lines saying "Integrity error . . ." and there is variation of the sectors shown. There are always between 12 and 18 lines in the list of errors. What could be causing these integrity errors?