title: Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0
body: <p>I opened an existing iOS project with Xcode6 beta6, and Xcode lists the following warning for both Storyboard and Xib files:</p>
  
  <blockquote>
    <p>Automatic Preferred Max Layout Width is not available on iOS versions
    prior to 8.0</p>
  </blockquote>
  
  <p>I tried addressing the warning by setting the width as explicit like below:</p>
  
  <p><img src="https://i.stack.imgur.com/grSAX.png" alt=""></p>
  
  <p>Yet this didn't resolve the warnings. How can they be removed?</p>