I uploaded a bunch (one-by-one ...) and when I go to the Library in the mobile-app the attached error displays.
I reviewed the files in a text-editor and it looks like it's supposed to (details in the other thread with similar name from 6 months ago - reply given by TheJuggler).
error message says:
TypeError: undefined is not an object (evaluating 'd[key]') - file:///var/containers/Bundle/Application/D1C91F14-F36B-431B-A22B-88F9275F3FCB/Sisyphus.app/www/prod/models.js - 3711
mobile: iOS 11.4.1 (Sisyphus app: updated/latest version)
browser: Chrome Version 70.0.3538.110 on Win 7Pro SP1 (Dell Latitude E5250)
Sisyphus firmware: 1.10.7
Closed/reopened app and now message doesn't appear, but none of the uploaded tracks are appearing in the library