I've recently installed x code 15.3, but when I try and open simulator I am unable to select a device. When I navigate through the top menu a few item are active. One of these (active menu item) is New Simulator: I've tried to add a new simulator. Enter a name, selected a device type, but the drop down menu for OIS Version is not populating. I am leaving paired apple watch off. When I click create nothing happens. Open Simulator is an option, but there does not list any device when the arrow is clicked. Any suggestion? Thanks, Ed.