title: The working copy requires a newer version of Subversion than Xcode supports
body: <p>I just installed <code>Xcode 4.6</code> (I had <code>Xcode 4.5.1</code>). I just opened an existing project and got this message:</p>
  
  <blockquote>
    <p>The working copy "path/to/my project" requires a newer version of Subversion than Xcode supports.</p>
  </blockquote>
  
  <p>I am currently using <em>Cornerstone</em> for svn, and understand that I can probably ignore this message - but since I want to be up-to-date, what do I need to do to resolve this issue?</p>
  
  <p><img src="https://i.stack.imgur.com/LFqV2.png" alt="Screenshot for warning"></p>