Last day I updated to OS X El Capitan(10.11),When I run a project in Xcode (6.3.1), I found the simulator list disappeared.I click the "run" button, Xcode Alert :Xcode cannot run using the selected device.
After that, I selected the simulator as the destination like below and run again, But it don't work and show me: unable to boot the IOS simulator. What's wrong?
On
I've seen this happen when resizing the window too narrow. If you widen the window, I suspect the list will re-appear. If not, make sure you file a radar at http://bugreport.apple.com with a screen capture video showing this happening.
I suggest you update Xcode to 7.2 and download the iOS7.0