title: Why doesn't Xcode recognize Main.storyboard?
body: <p>I am running Xcode 9.2 on 10.13.3 and just today ran into a problem with Xcode not recognizing Main.storyboard on an app that I am building. It worked on Friday and then today when I opened the app to work on it I get the following error:</p>
  
  <blockquote>
    <p>.../Base.lproj/Main.storyboard: Interface Builder could not open the
    document Main.storyboard" because it does not exist.</p>
  </blockquote>
  
  <p>Visually the file is there but does not respond. It is listed correctly in info.plist.</p>
  
  <p>I tried pulling versions from Time Machine from last week and I still get the same error.</p>
  
  <p>Is there anything short of rebuilding the storyboard that I can do to get Xcode to recognize it?</p>