Program: 81673
Project: 81673
Buggy source:
protected Void doInBackground() throws Exception {
  EgDownloaderWindow window=(EgDownloaderWindow)mainWindow;
  AddFormDialog addFormWindow=((AddFormDialog)window.addFormWindow);
  addFormWindow.setVisible(false);
  window.creatingWindow.setVisible(true);
  window.setEnabled(false);
  Setting setting=window.setting;
  Task task=null;
  try {
    task=ParseEngine.buildTask(url,saveDir,setting,window.creatingWindow);
    if (task != null) {
      window.pictureDbTemplate.store(task.pictures);
      window.taskDbTemplate.store(task);
      TaskingTable taskTable=(TaskingTable)window.runningTable;
      taskTable.getTasks().add(task);
      addFormWindow.emptyField();
      window.creatingWindow.dispose();
      addFormWindow.dispose();
      window.tablePane.setVisible(true);
      window.emptyTableTips.setVisible(false);
      taskTable.updateUI();
      window.setEnabled(true);
      window.setVisible(true);
    }
  }
 catch (  SocketTimeoutException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    JOptionPane.showMessageDialog(null,"String_Node_Str");
  }
catch (  ConnectTimeoutException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    JOptionPane.showMessageDialog(null,"String_Node_Str");
  }
catch (  SpiderException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    e.printStackTrace();
  }
catch (  WebClientException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    e.printStackTrace();
  }
  return null;
}

Fixed version (ground truth):
protected Void doInBackground() throws Exception {
  EgDownloaderWindow window=(EgDownloaderWindow)mainWindow;
  AddFormDialog addFormWindow=((AddFormDialog)window.addFormWindow);
  addFormWindow.setVisible(false);
  window.creatingWindow.setVisible(true);
  window.setEnabled(false);
  Setting setting=window.setting;
  Task task=null;
  try {
    task=ParseEngine.buildTask(url,saveDir,setting,window.creatingWindow);
    if (task != null) {
      window.pictureDbTemplate.store(task.pictures);
      window.taskDbTemplate.store(task);
      TaskingTable taskTable=(TaskingTable)window.runningTable;
      taskTable.getTasks().add(task);
      addFormWindow.emptyField();
      window.creatingWindow.dispose();
      addFormWindow.dispose();
      window.tablePane.setVisible(true);
      window.emptyTableTips.setVisible(false);
      taskTable.updateUI();
      window.setEnabled(true);
      window.setVisible(true);
    }
  }
 catch (  SocketTimeoutException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    window.setEnabled(true);
    window.setVisible(true);
    JOptionPane.showMessageDialog(null,"String_Node_Str");
  }
catch (  ConnectTimeoutException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    window.setEnabled(true);
    window.setVisible(true);
    JOptionPane.showMessageDialog(null,"String_Node_Str");
  }
catch (  SpiderException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    window.setEnabled(true);
    window.setVisible(true);
    e.printStackTrace();
  }
catch (  WebClientException e) {
    window.creatingWindow.dispose();
    addFormWindow.dispose();
    window.setEnabled(true);
    window.setVisible(true);
    e.printStackTrace();
  }
  return null;
}