The issue outlined below has now been resolved in a new macOS update. 

If you've run into this issue, then please update to macOS 14.4.1 for the fix.

We have received reports of crashes and disruption from users running beta and release candidate versions of macOS Sonoma 14.4, and Logic Pro X. 

These issues appear to affect a number of iLok protected plugin manufacturers.

If you are a Logic Pro user, please do not upgrade to macOS Sonoma 14.4. Apple will release a fix in the next macOS 14 update.

Below is a statement from PACE/iLok Support, taken from the official Apple Forums -