'terminating with uncaught exception of type NSException' in Xcode after selection of 'Start discovery' button

[AndreaZanuccoli]

Here what it happen when i press 'Start discovery' button when i launch the project on my iPhone5S:

I noticed this error happens only when i press immediately the button 'Start discovery'. If i select before the "Start ranging" button then i stop the ranging and select "Start discovery" the app don't crash and it shows the right beacons.

[andrekovac]

Is this still the case?