If you're on macOS 11.5 or later and have a CheckBook document on a thumb drive or an external drive that hasn't been reformatted for
APFS or
Mac OS Extended, this is the update for you. We chronicled a major data loss issue between
macOS 11.5 and
FAT volumes at
https://www.splasmata.com/?p=3702, but the short of it is
NSFileManager and
copyfile(), used by literally almost every application that touches a filesystem on your Mac, can no longer copy files directly to
FAT volumes with any guarantee of success, leaving completely empty files in their wake. 2.6.21 abandons these APIs on
macOS 11.5 or later when the destination is a
FAT volume or is shared over something besides
SMB or
AFP. Even so,
our strong recommendation is to reformat your
FAT volumes and make sure you're sharing network volumes over
SMB or
AFP as soon as possible. This release has a few other tweaks, including a fix for an issue that could prevent the Accounts list from redrawing after an Account is unlocked, so you won't want to miss it.
Learn more and update CheckBookLearn more and update CheckBook Pro