title: TortoiseSVN: Why can't I add an external (project) to the ROOT of my working copy?
body: <p><strong>Quick Summary:</strong></p>
  
  <p>I'm new to SVN and need some help with externals.  I'm trying to add a separate project to the root of my local working copy, but TortoiseSVN only lets me set the externals property to a subfolder.</p>
  
  <p><strong>Details:</strong></p>
  
  <p>I found a <a href="https://stackoverflow.com/questions/187506/how-do-you-use-version-control-with-access-development">set of scripts</a> here on stackoverflow that can be used with all of my MS Access projects.  I've placed it into its own folder (project) in my SVN repo, and I want to reference it in each of my MS Access projects.  Presumably, adding an svn:externals property would be the best way to accomplish this, but I can't seem to save the property unless I set the "Local path" to a subfolder.</p>
  
  <p>Screenshot of the property I'm trying to add:
  <a href="https://picasaweb.google.com/lh/photo/b9xwLnfqaRjllQwxhO4gT9MTjNZETYmyPJy0liipFm0?feat=directlink" rel="nofollow noreferrer">https://picasaweb.google.com/lh/photo/b9xwLnfqaRjllQwxhO4gT9MTjNZETYmyPJy0liipFm0?feat=directlink</a></p>
  
  <p>(for the record: I plan on using the ^/AccessDecomposer/trunk instead of the URL shown in the pic)</p>
  
  <p>I've tried . and ./ and a few other things, but when I try to save the property I get an error saying <code>Invalid svn:externals property on 'C:\Development\Access\BeneStr'</code> (which is my working copy), because <code>target '' is an absolute path or involves '..'</code> (which it's not!)</p>
  
  <p>The error message:
  <a href="https://picasaweb.google.com/lh/photo/-gwfPnzGrID3DKCHo3KkvtMTjNZETYmyPJy0liipFm0?feat=directlink" rel="nofollow noreferrer">https://picasaweb.google.com/lh/photo/-gwfPnzGrID3DKCHo3KkvtMTjNZETYmyPJy0liipFm0?feat=directlink</a></p>
  
  <p>Only 2 links allowed.  I'll see if I can add a comment with a screenshot of my repo later.</p>
  
  <p>Any suggestions?  Am I doing something wrong?  Is this not allowed?  Am I misunderstanding the purpose of externals?</p>