title: The operation couldn’t be completed. (OSStatus error -600.) Cant run app in simulator
body: <p>Using XCode 6.3.1 , SDK 8.3</p>
  
  <p>Suddenly my app stopped running in (any) simulator and Xcode throws error </p>
  
  <blockquote>
    <p>The operation couldn’t be completed. (OSStatus error -600.)</p>
  </blockquote>
  
  <p>Tried cleaning, reset content and setting and even restarting my Mac.</p>
  
  <p>Is there anything I can do to run my app in simulator. </p>