title: AjaxControlToolkit: error raising upload complete event and start new upload
body: <p>When using the April 2013 AjaxControlToolkit I receive the error:</p>
  
  <blockquote>
    <p>0x800a139e - JavaScript runtime error: error raising upload complete event and start new upload</p>
  </blockquote>
  
  <p>When trying to upload a file using the AjaxFileUpload control.</p>