title: Gulp throwing error: File not found with singular glob
body: <p>After renaming my file I am getting the following error when running the gulp build task:</p>
  
  <pre><code>Error: Error: File not found with singular glob: F:\Projects\xyz\HTML\app\css\main.css
      at DestroyableTransform.&lt;anonymous&gt; (F:\Projects\xyz\HTML\node_modules\gulp-useref\lib\streamManager.js:90:36)
  </code></pre>
  
  <p>main.css file no longer exists as I changed it to style.css but for some reason it is searching for the old file.</p>