Error between "MaxFileCount" and "SELECT ALL"

      var iu = new ImageUploaderWriter("ImageUploader1", 550, 400);

      //For ActiveX control full path to CAB file (including file name) should be specified.
      iu.activeXControlCodeBase = "imageuploader/ImageUploader4.cab";
	  iu.activeXControlVersion = "4,1,60,0";

	  iu.addParam("TreePaneWidth", "160");
      iu.addParam("PreviewThumbnailSize", "62");

      //important, dont upload the source!!
      iu.addParam("UploadSourceFile", "false");

	  //For Java applet only path to directory with JAR files should be specified (without file name).
	  iu.javaAppletCodeBase = "../";
	  iu.javaAppletCached = true;
	  iu.javaAppletVersion = "2.1.60.0";
      
      iu.showNonemptyResponse = "off";

      iu.addParam("Layout", "TwoPanes");
      iu.addParam("FolderView", "Thumbnails");          

      iu.addParam("UploadThumbnail1FitMode", "Fit");
      iu.addParam("UploadThumbnail1Width", "600");
      iu.addParam("UploadThumbnail1Height", "600");
      iu.addParam("UploadThumbnail1JpegQuality", "100");
      iu.addParam("UploadThumbnail1CopyExif", "false");
      
      iu.addParam("UploadThumbnail2FitMode", "Fit");
      iu.addParam("UploadThumbnail2Width", "120");
      iu.addParam("UploadThumbnail2Height", "120");
      iu.addParam("UploadThumbnail2JpegQuality", "100");
      iu.addParam("UploadThumbnail2CopyExif", "false");
      
      iu.addParam("UploadThumbnail3FitMode", "Fit");
      iu.addParam("UploadThumbnail3Width", "60");
      iu.addParam("UploadThumbnail3Height", "60");
      iu.addParam("UploadThumbnail3JpegQuality", "100");
      iu.addParam("UploadThumbnail3CopyExif", "false");

      iu.addParam("ShowButtons", "True");
      iu.addParam("ShowUploadListButtons", "True");
      iu.addParam("CheckFilesBySelectAllButton", "True");

      iu.addParam("ShowStatusPane", "False");
      
      iu.addParam("ShowUploadCompleteMessage", "true");

      iu.addParam("Action", "{ACTION_UPLOAD}");     // HERE  THE TEMPLATESYSTEM FILL IN photoupload.php?id=fr2w32
      iu.addParam("RedirectUrl", "editgallery.php?a=2");
      iu.addParam("LicenseKey", "XXXXXXXXXXXXXXX"); // I VE DELETE

      iu.addParam("AllowRotate", "True");

      iu.addParam("MaxFileCount", "40");
      iu.addParam("MaxFileSize", "0");
      iu.addParam("MaxTotalFileSize", "125829120");
      iu.addParam("FileMask", "*.jpg;*.jpeg;*.jpe;*.bmp;*.gif;*.png");

      iu.addParam("Padding", "0");
      iu.addParam("TreePaneWidth", "180");
      iu.addParam("BackgroundColor", "#ffffff");

      //Event Handler
      iu.addEventListener("UploadFileCountChange", "ImageUploader_UploadFileCountChange");
      iu.addEventListener("ViewChange", "ImageUploader_ViewChange");

      iu.fullPageLoadListenerName = "fullPageLoad";