title: Xcode process launch failed: Security
body: <p>I have been developing an app for 1 or 2 weeks now and just yesterday I have updated my iPhone 5S to the iOS 8 GM. Everything worked fine and I could test on my device as well until I deleted the app from my phone and wanted to build again. The following error appeared:</p>
  
  <pre><code>Could not launch "My App"
  process launch failed: Security
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/TzLwB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TzLwB.png" alt="Screenshot added"></a></p>
  
  <p>When I test with the simulator it works fine.
  Is this because of the iOS 8 GM update and how can I fix this launch problem?
  I want to be able to test on my iPhone and in the simulator.</p>