Unfortunately, we have to join the chorus of audio software developers advising users against upgrading your MacOS to Sonoma 14.4.
A few users have reported various problems with Kilohearts plugins in the latest MacOS update and we are in the process of working out what is causing them and finding a solution.
In the meantime, we recommend avoiding updating your OS, if possible. If you run into any issues with our software, please email the details to Kilohearts Support so we can keep you updated.