Problem with uploading original pictures

<script language="javascript">
	
var iu = new ImageUploaderWriter("ImageUploader", 650, 350);
// If you do not want to use ActiveX or Java version, set the appropriate property to false.
iu.activeXControlEnabled = true;
iu.javaAppletEnabled = true;

iu.activeXControlCodeBase = "ImageUploader4.cab";
iu.javaAppletCodeBase="./";

// ... initialize params ...
iu.addParam("PaneLayout", "TwoPanes");
iu.addParam("BackgroundColor", "#ffffff");
iu.addParam("UploadThumbnail1FitMode", "Fit");
iu.addParam("UploadThumbnail1Width", "120");
iu.addParam("UploadThumbnail1Height", "120");
iu.addParam("UploadThumbnail1JpegQuality", "50");
iu.addParam("FilesPerOnePackageCount", "1");
iu.addParam("AutoRecoverMaxTriesCount", "5");
iu.addParam("AutoRecoverTimeOut", "1200");
iu.addParam("ShowDebugWindow", "True");
iu.addParam("AdditionalFormName", "Form1");
iu.addParam("AllowRotate", "False");
iu.addParam("UploadSourceFile", "True");
iu.addParam("Action", "actualUpload.aspx");
iu.addParam("FileMask", "*.jpg;*.bmp;*.tiff;*.tif");
iu.addParam("MaxFileSize", "5242880");
iu.addParam("ButtonStopText", "<%=languageText["bStop"]%>");
iu.addParam("ButtonSelectAllText", "<%=languageText["bSelectAll"]%>");
iu.addParam("ButtonDeselectAllText", "<%=languageText["bDeselectAll"]%>");
iu.addParam("ButtonSendText", "<%=languageText["bSend"]%>");
iu.addParam("ProgressDialogTitleText", "<%=languageText["pdUploadFiles"]%>");
iu.addParam("ProgressDialogPreparingDataText", "<%=languageText["pdPreparingData"]%>");
iu.addParam("ProgressDialogCloseWhenUploadCompletesText", "<%=languageText["pdCloseThis"]%>");
iu.addParam("ProgressDialogEstimatedTimeText", "<%=languageText["pdEstimatedTime"]%> [Current] <%=languageText["pdOf"]%> [Total]");
iu.addParam("ProgressDialogCancelButtonText", "<%=languageText["pdCancel"]%>");
iu.addParam("MessageUploadCompleteText", "<%=languageText["pdUploadComplete"]%>");
iu.addParam("MessageSwitchAnotherFolderWarningText", "<%=languageText["SwitchAnotherFolderWarningText"]%>");
iu.addParam("ShowDescriptions", "0");
iu.addParam("CheckFilesBySelectAllButton", "True");
iu.addParam("SilentMode", "false");
iu.addEventListener("Progress", "ImageUploaderID_Progress");

//Localization
//Get the language to apply localization for.
switch (lang)
{
	case "sv":
		sv_resources.addParams(iu);
		break;
	default:
		lang = "en";
		en_resources.addParams(iu);
		break;
}

iu.writeHtml();
						
function ImageUploaderID_Progress(Status, Progress, ValueMax, Value, StatusText)
{
	if (Status=="COMPLETE")
	{
		tt = window.setTimeout("doAction()", 4000);
	}
	if (Status=="CANCEL")
	{
		tt = window.setTimeout("doAction()", 4000);
	}
}

</script>

protected override void Page_Load(object sender, System.EventArgs e)
		{
			base.Page_Load (sender, e);

			language = Convert.ToInt16 (Session["l"].ToString());

			user = -1;
			if(Session["User_ID"] != null)
				user = Convert.ToInt32 (Session["User_ID"]);
			
			//Get total number of uploaded files
			int intFileCount = Int32.Parse(Request.Form["FileCount"]);

			string strGalleryPath=System.Configuration.ConfigurationSettings.AppSettings["StoragePath"] + "\\Gallery\\" + Session["Subfolder"] + "\\";
			string strSessionPath = strGalleryPath + Session["index"].ToString();
			if(!Directory.Exists(strSessionPath))
				Directory.CreateDirectory(strSessionPath);
			if(!Directory.Exists(strSessionPath + "\\Thumbnails"))
				Directory.CreateDirectory(strSessionPath + "\\Thumbnails");


			dirPath = strSessionPath + "\\";

			//We iterate through the uploaded files and save them and appropriate data
			for (int i = 1; i <= intFileCount; i++)
			{
				//Get source image and save it to disk
				sourceFile = Request.Files["SourceFile_" + i];
				thumbFile = Request.Files["Thumbnail1_" + i];	
		
				tr = new Thread(new ThreadStart(this.NewThread));
				tr.Start();
			}
		}


private void NewThread()
		{
			try
			{
				uploadLogics (dirPath , sourceFile, thumbFile);
			}
			catch(Exception ex)
			{
				logger.Info("Error while uploading with Aurigma.", ex);
			}
		}


private void uploadLogics(string dirPath, HttpPostedFile sourceFile, HttpPostedFile thumbFile)
		{
			string fileName;
			string ext;
			long size;

			// Get the file name
			fileName = Path.GetFileName(sourceFile.FileName);		

			ext = fileName.Substring(fileName.LastIndexOf("."));
			fileName = fileName.Substring(0,fileName.LastIndexOf("."));

			fileName = Regex.Replace(fileName, @"[ ',;+%]", "_");

			// If already was uploaded file with that name, change the current file name
			string newFileName = fileName + ext;
			int j = 1;
			while (File.Exists(dirPath + newFileName))
			{		
				newFileName = j + "_" + fileName + ext;
				j++;
			}
			ext = newFileName.Substring(newFileName.LastIndexOf("."));
			fileName = newFileName.Substring(0,newFileName.LastIndexOf("."));

			// Shrink the file name to max 50 characters
			fileName = fileName.Length > 50 ? fileName.Substring(0, 50): fileName; 

			// Save the file 
			try
			{
				sourceFile.SaveAs(dirPath + fileName + ext);
				
                                                   [color=#ff0000]size = sourceFile.InputStream.Length;[/color]

				//Get first thumbnail (the single thumbnail in this code sample)
				thumbFile.SaveAs (dirPath + "Thumbnails\\" + fileName + ext);

				DBPhoto dbPhoto = new DBPhoto();
				dbPhoto.insertImage(Convert.ToInt64(Session["index"]), fileName + ext,0 , language, size, user, -1, -1, -1, -1, Session["Subfolder"]+"");
				dbPhoto.closeConn();
			}
			catch(Exception ex)
			{
				logger.Error("Error while saving file with Aurigma.", ex);
			}
		}