I am clicking on "backup", then on "Backup files for your entire
computer"
I get the error message "The system cannot find the file specified
(0x80070002)".
I kill this message twice, then the backup proceeds.
Some time back, I got a message that my disk lacked enough space to
accomplish the backup.  So I went to my backup disk and deleted a
bunch of files, probably the previous backups.  Following that, I
started getting this message.
How do I get rid of this message?