title: Xcode 4.3.1: Unable to open documents of type iPad XIB
body: <p>I have just upgraded to Xcode 4.3.1 and SDK 5.1. My project uses storyboard but has one nib/xib file. After the upgrade the compile fails with:</p>
  
  <pre><code>/* com.apple.ibtool.errors */
  /Users/jhn/Udvikling/Projekter/rmtelemedicin/RMTeleMedicin/RMTeleMedicin/MenuViewController.xib: error: Interface Builder is unable to open documents of type iPad XIB.
      Recovery Suggestion: Ensure the plugin for the iPad XIB document type, from the corresponding SDK, is installed.
  </code></pre>
  
  <p>Any one seeing the same problem?Any help would be appreciated.</p>