title: Xcode's iOS Simulator cannot be opened
body: <p>Error message:</p>
  
  <blockquote>
    <p>Check with the developer to make sure Simulator works with this version of OS X. You may need to reinstall the application. Be sure to install any available updates for the application and OS X.</p>
  </blockquote>
  
  <p>I have installed Xcode version 7.3.1 and OSX -10.11.5 and there are no available updates.</p>