title: How do I fix a project opened in xcode5 dp3 by accident?
body: <p>At some point I opened a project in xcode5 that was created in xcode4.  Now I can build/run because of a storyboard error.  XCode4 simply wont run it, it says:</p>
  
  <blockquote>
    <p>The document Storyboard.storyboard could not be opened, could not read
    archive.  Please use a newer version of XCode.  Consider changing the
    documents development target to preserve compatibility.</p>
  </blockquote>
  
  <p>So I go to XCode5 I get this:</p>
  
  <blockquote>
    <p>2013-07-19 10:38:11.340 ibtoold[756:707] [MT] DVTAssertions: ASSERTION
    FAILURE in
    /SourceCache/IDEInterfaceBuilderCocoaTouch/IDEInterfaceBuilderCocoaTouch-3697.3/IBPlugin/Utilities/IBObjectMarshalling.m:673
    Details:  Failed to compute auto layout status IBLayoutConstraint,
    IBUILabel, IBUITableViewCell, and IBUITableViewCellContentView.</p>
    
    <p>Interface Builder encountered an error communicating with the iOS
    Simulator. If you choose to file a crash report or radar for this
    issue, please check Console.app for crash reports for "Interface
    Builder Cocoa Touch Tool" and include their content in your crash
    report.</p>
  </blockquote>
  
  <p>and when I try to open the storyboard, XCode5 crashes.</p>
  
  <p>Any ideas?</p>