title: SmartSVN how to revert ignored files
body: <p>I ignored a few files using SmartSVN. Now, I want to revert this changes. I read that the following command can be used:</p>
  
  <pre><code>svn propdel svn:ignore -R
  </code></pre>
  
  <p>But There is error: "The path '.' appears to be part of a Subversion 1.7 or greater
  working copy.  Please upgrade your Subversion client to use this
  working copy."</p>
  
  <p>What is the best way to revert ignore operation ?</p>