title: Getting wrong responses from CKFinder when inserting images via drag and drop
body: <p>I'm using CKEditor 4.5.1 with CKFinder 2.5 for ColdFusion 8 and the Enhanced Image and Upload Image plugins.</p>
  
  <p>I've successfully integrated CKFinder with CKEditor, and I can insert images into the editor using the normal CKFinder interface. They upload to the correct folder and show up in the editor just fine. I can drag and drop images into the CKFinder interface, and they upload and display in the CKEditor just fine.</p>
  
  <p>However, when I try to drag and drop the images directly into the editor window, I get an "<strong>incorrect server response</strong>" message.</p>
  
  <p>Using Chrome's developer tools and Fiddler, I see that when I drag and drop the images into CKFinder's interface, it's calling the QuickUpload method of the connector and returning back a proper JSON response. When I drag and drop the images into the editor's interface, it calls the same QuickUpload method, the upload fails and only returns back a <strong>0</strong>, and no JSON at all. The documentation says that even with a failure, it should still be sending back JSON with an error message.</p>
  
  <p>I've instantiated the CKEditor normally.</p>
  
  <pre><code>&lt;script src="/js/plugin/ckeditor/ckeditor.js"&gt;&lt;/script&gt;
  &lt;script src="/js/plugin/ckfinder/ckfinder.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript"&gt;
      CKEDITOR.replace( 'message');
  &lt;/script&gt;
  </code></pre>
  
  <p>In my config.js file for the editor, I've set my required urls.</p>
  
  <pre><code>config.filebrowserBrowseUrl = '/js/plugin/ckfinder/ckfinder.html';
  config.filebrowserImageBrowseUrl = '/js/plugin/ckfinder/ckfinder.html?type=Images';
  config.filebrowserUploadUrl = '/js/plugin/ckfinder/core/connector/cfm/connector.cfm?command=QuickUpload&amp;type=Files';
  config.filebrowserImageUploadUrl = '/js/plugin/ckfinder/core/connector/cfm/connector.cfm?command=QuickUpload&amp;type=Images';
  </code></pre>
  
  <p>I activated the Upload Image plugin (all of the dependencies were downloaded with the build).</p>
  
  <pre><code>config.extraPlugins = 'image2,uploadimage';
  </code></pre>
  
  <p>According to the docs, I should not need to set config.uploadUrl since I have config.filebrowserUploadUrl set, but I've also tried setting uploadUrl with no difference in result.</p>
  
  <p><strong>Why is CKFinder failing to upload and sending back the wrong response when I drag and drop into the main CKEditor interface?</strong></p>