I usually Backup my computer to DVDs and validate the DVDs at another time, today I wanted to try to validate right after I burned the DVDs. Under additional settings I have checked "Validate backup archive after upon its creation compleation". When I finish burning the DVDs I get a popup saying put in volume 1 so I change disks and click OK, it runs for a bit then I get another popup. The disk is not the last one recorded, so I put in no.4 disk. This goes on for a while. Then I go back to validating as a separate job. What is going on, did I leave something out.