title: FBSOpenApplicationErrorDomain code =4 error
body: <p>When I'm trying to run iOS application in Xcode 6 in iPhone 6 simulator, I'm getting error <strong>Unable to run app in Simulator</strong>.  </p>
  
  <p>And error code is: </p>
  
  <blockquote>
    <p>An error was encountered while running (Domain =
    FBSOpenApplicationErrorDomain, Code = 4)</p>
  </blockquote>
  
  <p>Can any one suggest how to resolve it?</p>
  
  <p><img src="https://i.stack.imgur.com/cSu4m.png" alt="enter image description here"></p>