title: grunt-contrib-copy dies with EPERM operation not permitted "C:\Documents and Settings"
body: <p>I am trying to run a simple <code>grunt</code> task using <code>grunt-contrib-copy</code>, but it dies immediately on reaching the copy task, with this message:</p>
  
  <blockquote>
    <p>Running "copy:main" (copy) task</p>
    
    <p>Warning: EPERM, operation not permitted 'C:\Documents and Settings' Use --force to continue</p>
    
    <p>Aborted due to warnings</p>
  </blockquote>
  
  <p>I am running:</p>
  
  <ul>
  <li>Windows 7 64-bit (so <code>C:\Documents and Settings</code> doesn't exist)</li>
  <li>node 0.10.28 (installed at <code>C:\nodejs</code>)</li>
  <li>npm 1.4.9</li>
  <li>grunt-cli 0.1.13</li>
  <li>grunt 0.4.5</li>
  <li>grunt-contrib-copy 0.5.0</li>
  </ul>
  
  <p>I have done a full-text search for "Documents and Settings" on both <code>C:\nodejs</code> and my project folder (<code>C:\Users\myusername\Documents\Programming\myprojectname</code>, with no spaces or parentheses in there), but nothing matches.</p>
  
  <p>My <code>copy</code> task definition is:</p>
  
  <pre><code>copy: {
      main: {
          files: [
              {expand: true, cwd: 'src/core', src: '/**', dest: 'src/chrome/'},
              {expand: true, cwd: 'src/core', src: '/**', dest: 'src/firefox/'}
          ]
      }
  },
  </code></pre>
  
  <p>What could be causing this error?</p>