Michael-- Thank you very much for these ideas. Although my computer doesn’t have a microphone or webcam with microphone, I did go to System Settings–>Privacy & Security–>Microphone, and enabled the access setting for VST Live 2. Then I rebooted the computer and launched VST Live. The issue remained (still no audio from VST Live.
However, the comments in your previous post (about Devices–>Audio Setup–>Audio Input, Sample Rate and Buffer Size) gave me some information to troubleshoot with, and I think that the issue might be solved.
I don’t have a need to route audio into the Mac at this time, neither by microphone nor audio produced by external hardware (synths, etc.). Currently I route only MIDI data into the computer, by using a direct USB-to-USB connection/cable between a hardware device (like my MIDI keyboard) and the computer, or from a MIDI hub connected to one or more MIDI hardware devices by MIDI-to-MIDI cable, while the hub itself is connected to the computer using a USB-B-to-USB-A-or-C cable.
Because I’m only routing MIDI data into the computer for use with virtual instruments, but am not recording nor have any need to route external audio into the computer, no audio interface has been connected to the computer. But I do have an audio interface, a Mackie Onyx Producer 2-2 external audio interface.
I shut down the Mac, connected the audio interface to the computer, rebooted the computer, and despite the fact that there are no external instruments or microphones or other hardware, and no MIDI, connected to any of the input or output ports on the audio interface, the interface itself now appears in Mac OS Audio MIDI Setup app–
–and after launching VST Live, it also appears in Devices–>Audio Setup…–
But, the great news (for me, anyway) is that with the external audio/MIDI interface connected to the computer via USB, and despite the fact that it’s audio and MIDI ports are unused and unneeded, VST Live works and produces/outputs audio from a chosen VST instrument (like aHALion7 preset).
Now I’m going to go to System Settings–>Privacy & Security, and disable access to the microphone for VST Live and reboot the computer, in order to see if that access setting is required or not, for VST Live to process MIDI and output audio. I’ll update this reply in a few minutes.
OK-- update, findings and observations are in a separate reply.