How to get usb debugging on android 6 working?

So I used to have this working on 5, after an update to Android 6 I'm unable to get USB debugging to work. Anyone else run into this?

I've enabled USB debugging on the device.
I've tried three different USB cables
there are no options under storage & USB for, well, USB
I tried downloading the LG G4 unified drivers for OSX

Solution

You might try revoking the debugging authorizations:

Unplug the device
Go into Settings > Developer Options and tap on "Revoke USB debugging authorizations"
Click OK on the resulting dialog
Plug the device in again and see if you get the ADB authorization dialog