title: Xcode 6.3 freezes/hangs after opening XIB file
body: <p>After upgrading to Xcode 6.3 (release version), Xcode now freeze every time I open a XIB/Storyboard file that includes an <code>IB_DESIGNABLE</code> view <del>that uses a custom font</del> for any projects and includes a custom font (not necessarily to have reference to that font in that XIB/Storyboard). The freeze occurs after opening the .xib file and then attempting to switch to any other file. Xcode hangs and must be force quit.</p>
  
  <p>I have opened a bug report with Apple. (Bug 20483867).</p>
  
  <p>Right now, I have two work arounds.</p>
  
  <ol>
  <li>Download and use Xcode 6.2 from Apple.</li>
  <li>Remove the IB_DESIGNABLE tags from the custom view header files.</li>
  </ol>
  
  <p>This is likely an Apple bug, but does anyone have a better work around or solution?</p>