If there is still a problem, trash 2.1.1 and install 2.1.2 RC2 (for testing) from http://www.fosshub.com/Audacity.html. Be sure to follow these installation instructions: https://forum.audacityteam.org/t/installation-do-not-run-audacity-from-the-dmg/31711/1
Reboot before launching 2.1.2 RC2.
If problems persist after that, use the Go menu in Finder “Utilities > Disk Utility”. Do Verify Disk and then Repair Permissions.
Gale