Supercollider headless autostart and/or single_click.sh

Sure, first here is the jack.log:
jackdmp 1.9.10 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2014 Grame. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 75 self-connect-mode is "Don't restrict self connect requests" audio_reservation_init Acquire audio card Audio1 creating alsa driver ... hw:1|hw:1|64|3|48000|0|0|nomon|swmeter|soft-mode|32bit configuring for 48000Hz, period = 64 frames (1.3 ms), buffer = 3 periods ALSA: final selected sample format for capture: 32bit integer little-endian ALSA: use 3 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 3 periods for playback

and then I can confirm that jackd is running by using top.

And here is the sc.log:
terminate called after throwing an instance of 'boost::exception_detail::clone_$ what(): assign: Operation not permitted

That’s the whole log. This is from pushing the button once.

Carl