Device: macOS 10.12 with Phidget21 - Version 2.1.8 - Build Sep 21 2016 Steps to reconstruct: 1. Connect Phidget (e.g. 1073_0 - PhidgetSBC3). 2. Open System Preferences -> Phidgets. 3. Go to Bonjour tab. 4. Disconnect Phidget (the one from step 1) and sometimes (1 in 10 attempts) loading ball of dead...