title: FileUpload not saving in Project directory
body: <p>I am using Ajaxtoolkit fileupload but uploaded files are not saving in specified directory.
  Fileuploader is works fine but saves no file in directory, SO I checked my browser console and it says <strong>"Uncaught TypeError: Cannot read property 'cannotDeserializeEmptyString' of undefined"</strong> I want to know what it means I searched but could not find.</p>
  
  <p>Here is the code behind.</p>
  
  <pre><code>protected void AjaxFileUpload1_UploadComplete(object sender, AjaxControlToolkit.AjaxFileUploadEventArgs e)
      {
          string fileName = Path.GetFileName(e.FileName);
          string dir = "~/Uploads/";
          AjaxFileUpload1.SaveAs(Server.MapPath(dir + fileName));
      }
  </code></pre>