Re: start up bug on Mac OS (and yes, this is Mac OS only)
"Exception: CoreAudio error (AudioQueueStart): 89"
This is a Ren'Py induced bug -- I've seen it when running some Ren'Py 7.X games (or, oddly, Discord). Rebooting usually fixes it, or barring that (via Terminal):
% sudo kill -9 coreaudiod
This will force the AudioQueue to re-initialize (it's part of AudioToolbox.framework, iirc). Don't do this if you have audio running elsewhere that you need to keep running. This is like taking a sledgehammer to something that requires a scalpel, but it's quick, and might be better than rebooting. If you don't know how to use sudo on a Mac, don't do this.