Magic Trackpad 2 is only recognized as a Mouse
My new Magic Trackpad 2 is recognized only as a mouse. It pairs fine over Bluetooth, but when it does the brief flash of a mouse appears, not a trackpad, and after pairing System Preferences recognizes it is a mouse. This behavior is the same weather I plug it in with the cable or via BT.
Thinking it was a Trackpad conflict, I disconnected my old Magic Trackpad 1, and tried again ... but achieved the same unsatisfying results.
(This is repeatable behavior both with my 27" iMac, running latest El Cap., as well as my 17" MacBook Pro, running latest El Cap.)
Any suggestions on how to make it recognized as a Trackpad?