Apple OS upgrade season is once again upon us – and, of course, we’re hip-deep in making sure everything’s just right between our applications and Apple’s latest. Here’s a rundown of where we’re at:
All of our applications: macOS 26 strong-arms all application icons into squircles, or continuously curved rectangles, so, despite our strong preference for living as if there is no box, and Apple’s long history of admonishing us to think different and treat the Mac as if we tell it what to do and not the other way around, we now have to shrink our icons into a squircle, giving up valuable pixel real estate we’ve traditionally used to communicate function and brand in favor of the flavor of the day. Moving on. For the moment, macOS 26 takes the current icon and places it within a grey squircle. We’ll update all our application icons soon with more appropriate background colors.
Audiobook Builder 2.2.9: One major issue, though it appears to be with macOS 26 itself. Our current understanding is building a Part that would require converting more than about 2.1 billion samples of source material will result in what looks like a stalled or hung build. You might recognize 2.1 billion is mighty close to 2^31, the maximum value you can store in a signed 32-bit integer. In this case, we believe there’s a signed 32-bit integer deep within macOS 26 that Apple needs to suss out and replace with a more modern 64-bit value. We say that because we can duplicate the issue completely outside of Audiobook Builder in QuickTime Player. We’ve filed a bug report with Apple and appreciate your patience as this kind of thing can take a while to resolve. Fingers crossed with QuickTime Player involved the fix will come sooner than later!
If you don’t want to fiddle with Target Part Length and sample rate isn’t a concern, simply make sure you build to the same or higher sample rate than your source material. For example, if your source audio is 44.1 kHz, just make sure your Build Options > Quality is set to High or select Quality > Custom… and set Sample Rate to 44.1 kHz or higher. Use the same idea for other sample rates – always build to the same or higher sample rate.
If you’d like a lower sample rate and don’t mind changing your Target Part Length, here are the maximum lengths for each sample rate:
| Sample Rate | Maximum Target Part Length |
|---|---|
| 48 kHz | 12 hours |
| 44.1 kHz | 13 hours |
| 32 kHz | 18 hours |
| 22.05 kHz | 27 hours |
| 16 kHz | 37 hours |
| 12 kHz | 49 hours |
| 11.025 kHz | 54 hours |
| 8 kHz | 74 hours |
Note as of 11/4/2025 this issue is still unresolved in macOS 26.1, though we believe a very similar issue with pass through may have been corrected in macOS 26.0.1. If you’d like to see QuickTime Player exhibit the issue without involving Audiobook Builder at all, reach out to support@splasm.com and we’ll be happy to send the test file and steps to follow.
CheckBook and CheckBook Pro 3.0.3: The only major compatibility issue we’ve found is a glitch that prevents you from starting a Reconcile > Ending Balance with a negative symbol or dash (–). The workaround for now is to enter a positive value, then click to the left of the amount and type a dash (–). We’ll have this resolved, along with some other bits and a Liquid Glass icon, in the next update.
PixelGriddle 1.1.3: We’re evaluating compatibility and will update this space soon.
Return Labels 1.1.1: We’re evaluating compatibility and will update this space soon.
Did we miss anything? Please let us know at support@splasm.com and we’ll be happy to dive in and sort it out. Thank you!
