With the release of Sonoma 14.4 there are reports of incompatibilities. As ever our advice is that you should be careful about updating your OS and definitely shouldn’t do it on your studio machine mid-project.

Sonnox have reported an issue which affects PACE protected products:

We have received reports of a compatibility issue with yesterday’s release of macOS 14.4 Sonoma on Apple Silicon Macs.

This issue affects plug-ins from all manufacturers protected by PACE / iLok when used with AU host DAWs such as Logic. Therefore, if you use Audio Units on an Apple Silicon Mac, please defer your update until more is known.

We are contacting PACE and will update you once we find a resolution.

More detail is Provided by LiquidSonics who reported on Facebook that:

Multiple reports are beginning to come in from clients about a compatibility issue with yesterday's release of macOS 14.4 Sonoma on Apple Silicon Macs so caution is advised before upgrading to this point release.
DAWs affected appear only to be those relying on Apple's auvaltool, so if you use Audio Units on an Apple Silicon Mac please consider deferring your update until more is known.
When the problem presents it affects multiple plug-ins protected by Pace / iLok on the same system, but not all systems are affected. None of those tested by LiquidSonics on Intel or Apple Silicon Macs have exhibited the fault with the beta or release builds of macOS 14.4 so it is not a universal issue, but it is sufficiently widespread to justify issuing an advisory note.
Contact has been made with Pace to initiate a full investigation with supporting crash log data and more information will be communicated at a future date when there is more clarity regarding a resolution.

If the issue is affecting all PACE protected products it looks like anyone using a Mac for audio production should hold off upgrading for the time being.