title: Message from debugger: unable to attach error for osx app
body: <p>I have been building mac app on my mac mini and it always worked well but today i faced this error, searched a lot but no luck.</p>
  
  <p><strong>Message from debugger: unable to attach</strong></p>
  
  <p>What i tried:</p>
  
  <ul>
  <li>Clear derived data</li>
  <li>Quit Xcode</li>
  <li>Restart machine</li>
  <li>installation directory set to blank and also to /Applications</li>
  <li>Tried Skip Install No / Yes</li>
  <li>Using developer Signing certs</li>
  <li>M using only Developer certificates and not provisioning profile to sign my cocoa app</li>
  </ul>
  
  <p><strong>Xcode 8.2</strong></p>
  
  <p><strong>OSX 10.12.1</strong></p>
  
  <p>Please help :)</p>