A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate
in the Unity community.
Thank you @theolagendijk That got it working. Timeline disaster averted.
@vuforia - you are doing a great job. please fix soonest :-) Thank you all!
So I upgraded to Xcode 9.3 - which I believe removed Xocde 9.2. And have the same issue. So just to be clear - you need reinstall Xcode 9.2 for...