IntelliJ won't recognize new Galaxy S6 Edge

Developing in Flex. I have two iOS devices and two Android devices. I can launch my app for both iOS devices and one of the Android devices, an old Express Note. I just bought the S6 Edge and it's connected and Android File Transfer app works fine, sees the phone and I've done some file transfer successfully.

But IntelliJ can't find it when I try to Run or Debug on the Android device. Thought it was a bad cable, so I plugged it into the computer using the cable on the Android device that runs and debugs just fine. No difference, getting the "Error, No Android devices connected to the computer, Cancel / Scan Again" message.

I've repeatedly tried scanning again, unplugging and plugging the phone back in, I'm logged into the phone. I've restarted IntelliJ after quitting from the IntelliJ IDEA menu.

Mac OSX Sierra 10.12.5
IntelliJ IDEA 2017 1.2
Galaxy S6 Edge (AT&T no plan) with Android 5.1.1, Developer Mode Enabled
Tried several different USB ports

Ideas? Suggestions? Thanks!