title: Unable to boot iOS 8 Simulator
body: <p>I have just updated my Xcode to 6.0.1 from Mac App Store, and my OS version is OS X 10.9.5. The problem is that the iOS 8 Simulator is not loading, but the iOS 7 simulator is working fine.</p>
  
  <p>Every time I try to boot an iOS 8 simulator device, I get an error message:</p>
  
  <blockquote>
    <p>"Unable to boot iOS Simulator"</p>
  </blockquote>