Hi folks, Been a while, hope everyone is safe. I'm experiencing something very strange and feel I must be doing something wrong. (MacOS 10.14.6) Running chuck on command line like this: $ chuck --dac7 --out7 --channels4 --srate48000 --verbose --loop Then I run this file to test outputs: SinOsc s0 => dac.chan(0); SinOsc s1 => dac.chan(1); SinOsc s2 => dac.chan(2); SinOsc s3 => dac.chan(3); 1::second => now; Yields this error: [chuck](VM): NullPointerException: (UGen link) on line[3] in shred[id=1: speaker_tester.ck] Note: "line[3]"... it only thinks there are two dac channels. Indeed, I can only get sound out of dac.chan(0) and dac.chan(1). I get the same behavior in chuck versions 1.4.0.1, 1.4.0.0, & 1.3.6.0 I get the same behavior in different sound cards with 4+ channels out. BUT... the code works with 4 channels in miniAudicle! What is going on? What am I doing wrong? All best, Mike -- Michael Clemow Artist/Composer/Sound Designer http://michaelclemow.com (he/him)