I make a new scheduled task, my data, differential backup, and then when I try to run it, I get this message: W00640070: Insert the last archive volume for appending the backup incrementally Which doesn't seem to make sense since there was no last archive. When I give is a blank DVD (internal DVD drive works fine for many other apps) I get error C0064006C Incremental backup is not possible.... I respond "yes, go ahead anyway" and get W00640070: Insert the last archive volume for appending the backup incrementally which doesn't respond to retry or format, only cancel...back to square one. Any suggestions on what's going on here would be appreciated. Thanks!