This is working for me:
Run Xcode 8.0b6 on OS X 10.11.6.
Create a new iOS app from the Single View Application template.
Select the Generic iOS Device destination.
Choose Product > Build, to make sure it builds OK.
Choose Product > Archive to create an archive.
I’m not sure what’s going on with your setup. You may want to try the usual debugging steps:
try on a different account, to see if it follows your user
try on a different (possibly virtual) machine, to see if it follows your Mac
Share and Enjoy
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"
I believe this might be related. I've also run into this recently. For me, reinstalling Xcode solved the problem. I still believe there must be a better way. I got 21 errors in my project when building for a physical device (iPad Mini 3) and all of them were superclass errors in iOS 10 UIKit. Anyways, if you find something, let me know!