Thumb Nail Not Uploading

<script type="text/javascript">

//Create JavaScript object that will embed Image Uploader to the page.
var iu = new ImageUploaderWriter("ImageUploader1", 750, 500);
iu.addParam("LicenseKey", "7759-9374-7639-7639");

//For ActiveX control full path to CAB file (including file name) should be specified.
iu.activeXControlCodeBase = "ImageUploader4.cab";
iu.activeXControlVersion = "4,1,1,0";
iu.showNonemptyResponse = "off";


//Configure appearance and behavior.
iu.addParam("PaneLayout", "ThreePanes");
iu.addParam("FolderPaneHeight", "200");
iu.addParam("ShowDebugWindow", "true");
iu.addParam("AllowMultipleRotate", "true");
iu.addParam("AllowMultipleRemove", "true");
iu.addParam("BackgroundColor", "#EDEDED");
iu.addParam("ShowDebugWindow", "true");


//Configure file mask to display JPEG images only.
iu.addParam("FileMask", "*.jpg;*.jpe;*.jpeg");
iu.addParam("UploadSourceFile", "true");

//Upload thumbnail
iu.addParam("UploadThumbnail1FitMode", "Fit");
iu.addParam("UploadThumbnail1Width", "140");
iu.addParam("UploadThumbnail1Height", "140");
iu.addParam("UploadThumbnail1JpegQuality", "80");


//Configure URL files are uploaded to.
iu.addParam("Action", "upload.php");

//Configure URL where to redirect after upload.
iu.addParam("RedirectUrl", "");

//Tell Image Uploader writer object to generate all necessary HTML code to embed 
//Image Uploader to the page.
iu.writeHtml();
//]]>
	</script>