Knox tried to backup and produce an error message:
An internal error prevented Knox form backing up the vault. It went on to report error status 255. I tried to force a manual backup, which it seems to have completed, but in the folder one level above where the backups are specified. I rebooted and reselected the backup folder. Got the same internal error.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided