Why is Super Duper giving me permissions errors?

Episode 1029 (27:33)

Tony from Buffalo, NY

Tony is having issues backing up with Super Duper with his iMac. He keeps getting permissions errors. Leo says that for some reason, some drives can become read only out of nowhere. So he will have to change it back. Tony says when he schedules a backup, even though it's locked, he gets the same error. Leo says the issue may be in the settings in Super Duper.