I did the disk image with Paragon Drive Backup from the USB stick. Then I booted in Windows XP and verified image with Paragon Drive Backup 9.0 Personal OK. In the next step I start up Differential Backup Wizard and it shows in the Archive Content my disk image. When I click Next it shows error message: The Wizard did not find any objects that can be used to make a differential backup. Is it impossible to make differential backup of disk image or I do something wrong?