title: Why can't SVN find the repository location for revison 0
body: <p>I've recently upgraded the version of SVN and TortoiseSVN that I have installed on my workstation and whenever I check the diffs on a file without any changes, I get the following error.</p>
  
  <pre><code>Unable to find repository location for "&lt;path&gt;" in revision 0
  </code></pre>
  
  <p>I've checked out a fresh copy of one of my projects (I've tried it on a few), and it still gives me the same result.</p>
  
  <p>I've tried upgrading SVN on my work station in hopes it would fix the problem (I assumed an incomparability) - no dice.</p>
  
  <p>I also tried re-installing TortoiseSVN completely - again, no dice.</p>
  
  <p>The only other funny thing I've done is move the location of the original repository (stored in on the file system, not a DB). But its path is the same as the error message, so I believe it's finding the repository. </p>
  
  <p>What else could be the cause?</p>