title: Cannot update project from its SVN repo in Xcode
body: <p>I have a project that lives in an SVN repository. The repository is added to Xcode, I can browse it from my Organizer and check out projects. Here's the problem. Whenever I'm trying to <em>update</em> an old version of the project to a new one, I right-click on the project int the Project Navigator and go to Source Control -&gt; Update selected files, I get the following error:</p>
  <blockquote>
  <p><strong>The operation could not be performed because the selection is invalid.</strong></p>
  <p>Please verify the selection and try again.</p>
  </blockquote>
  <p>What am I doing wrong? I tried selecting individual files instead of the project, and I tried selected lines of code (silly, but you never know). Am I not checking out the project correctly? Is this a common issue?</p>
  <p>Cheers! = )</p>