title: Why does RadAsyncUpload not upload the file?
body: <p>I am switching some code from RadUpload to RadAsyncUpload in order to prevent a file size over 250MB etc.</p>
  
  <p>When I switch the code back to RadUpload the file does Upload to the \Upload folder - but this is not occuring with RadAsyncUpload.</p>
  
  <p>I have set most if not of the OnClient events as shown in the code, but the only one firing is <code>OnClientFileUploaded</code> However the file does not end up in the <code>TargetFolder</code></p>
  
  <p>What can be done to trouble-shoot the File not actually uploading? How can it be made to work?</p>
  
  <p>JavaScript</p>
  
  <pre><code>    function OnClientFileUploadFailed(sender, args) {
      alert("OnClientFileUploadFailed");
      alert(args.get_message());
  }
  function OnClientValidationFailed(sender, args) {
      alert("OnClientValidationFailed");
      //alert(args.get_message());
  }
  function OnClientFileDropped(sender, args) {
      alert("OnClientFileDropped");
      //alert(args.get_message());
  }
  function OnClientFileUploaded(sender, args) {
      alert("OnClientFileUploaded");
      //alert(args.get_message());
  }
  function OnClientFileUploadRemoved(sender, args) {
      alert("OnClientFileUploadRemoved");
      //alert(args.get_message());
  }
  </code></pre>
  
  <p>.ASPX</p>
  
  <pre><code>&lt;telerik:RadAsyncUpload 
      runat="server"
      ID="fuUploadFile"
      MaxFileSize="262144000"
      ControlObjectsVisibility="None" 
      OnClientFileUploadFailed="OnClientFileUploadFailed" 
      OnClientValidationFailed="OnClientValidationFailed" 
      OnClientFileDropped="OnClientFileDropped" 
      OnClientFileUploaded="OnClientFileUploaded" 
      OnClientFileUploadRemoved="OnClientFileUploadRemoved" 
      InputSize="50"
      TargetFolder="\Upload"
      AllowedFileExtensions=".wav,.mp3,.mpeg,.mpg,.wmv,.avi,.mp4" /&gt;
  </code></pre>