title: subclipse/svn 1.8 - unable to add existing files to source control
body: <p>I recently had to do a re-install of Eclipse (4.3 Kepler), and re-installed PyDev (3) and Subclipse (1.8), and re-established the connection to our SVN repository. When I attempt to add a project or individual files to Version Control, I get this error:</p>
  
  <pre><code>Unsupported working copy format svn: This client is too old to work with the working copy at 'C:\PythonDev\Common' (format 31). You need to get a newer Subversion client.
  </code></pre>
  
  <p>The SVN client I'm now using (1.8) is later than the one that was used when these files were initially added to the SVN repository, so the error is weird. Assuming that the actual problem is that the format is from an older (not newer) client, I attempted to run <strong>svn upgrade</strong> but the docs for that command are unclear, and no matter what path I specify I either get errors that the "wc.db" is not found (but it's right where the error says it's trying to find it) and that the specified folder isn't the working copy root. If I instead specify the folder that IS the working copy root, I get no response at all from svn upgrade - no errors, and no indication that anything was upgraded, and I still can't add these projects/files to source control.</p>
  
  <p>Any suggestions?</p>