FileMaker Server & macOS 10.15 Catalina: Backup Destination Not Writable

Warning 156 Schedule “HOURLY_BACKUP_USB” aborted; the destination “filemac:/BackUps/” is not writable.

FileMaker Server & macOS 10.15

If you upgrade your Mac server to macOS 10.15 Catalina, you might find that your backup schedules to external drives start failing with an error number 156. Although apparently fixed in FileMaker 18.0.4, it’s rearing its…