Program: 187626
Project: 187626
Buggy source:
public static void main(String[] args){
  String path=SkilltreeCreator.class.getProtectionDomain().getCodeSource().getLocation().getPath();
  path=path.replace("String_Node_Str","String_Node_Str").replace("String_Node_Str",File.separator).substring(1);
  File bukkitFile=new File(path);
  try {
    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
  }
 catch (  Exception ignored) {
  }
  Image logoImage=new ImageIcon(ClassLoader.getSystemResource("String_Node_Str")).getImage();
  try {
    Class.forName("String_Node_Str");
  }
 catch (  ClassNotFoundException e) {
    String[] buttons={"String_Node_Str","String_Node_Str"};
    int result=JOptionPane.showOptionDialog(null,"String_Node_Str" + "String_Node_Str" + "String_Node_Str" + bukkitFile.getAbsolutePath() + "String_Node_Str"+ bukkitFile.getParent(),"String_Node_Str",JOptionPane.ERROR_MESSAGE,0,null,buttons,buttons[1]);
    if (result == 0) {
      System.exit(0);
    }
 else     if (result == 1) {
      bukkitDownloader=new BukkitDownloader();
      bukkitDownloaderFrame=new JFrame("String_Node_Str");
      bukkitDownloaderFrame.setContentPane(bukkitDownloader.downloaderPanel);
      bukkitDownloaderFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      bukkitDownloaderFrame.setIconImage(logoImage);
      bukkitDownloaderFrame.pack();
      bukkitDownloaderFrame.setVisible(true);
      bukkitDownloaderFrame.setLocationRelativeTo(null);
      bukkitDownloader.startDownload();
    }
    return;
  }
  MyPetSkillTreeConfig.setConfigPath(bukkitFile.getAbsolutePath() + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str");
  MyPetSkillTreeConfig.loadSkillTrees();
  skilltreeCreator=new SkilltreeCreator();
  skilltreeCreatorFrame=new JFrame("String_Node_Str");
  skilltreeCreatorFrame.setContentPane(skilltreeCreator.skilltreeCreatorPanel);
  skilltreeCreatorFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  skilltreeCreatorFrame.setIconImage(logoImage);
  skilltreeCreatorFrame.pack();
  skilltreeCreatorFrame.setVisible(true);
  skilltreeCreatorFrame.setLocationRelativeTo(null);
  levelCreator=new LevelCreator(skilltreeCreatorFrame);
  levelCreatorFrame=levelCreator.getFrame();
  levelCreatorFrame.setContentPane(levelCreator.getMainPanel());
  levelCreatorFrame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
  levelCreatorFrame.setIconImage(logoImage);
  levelCreatorFrame.pack();
  levelCreatorFrame.setLocationRelativeTo(null);
  levelCreatorFrame.addWindowListener(new WindowListener(){
    public void windowOpened(    WindowEvent e){
    }
    public void windowClosing(    WindowEvent e){
      skilltreeCreatorFrame.setEnabled(true);
    }
    public void windowClosed(    WindowEvent e){
    }
    public void windowIconified(    WindowEvent e){
    }
    public void windowDeiconified(    WindowEvent e){
    }
    public void windowActivated(    WindowEvent e){
    }
    public void windowDeactivated(    WindowEvent e){
    }
  }
);
}

Fixed version (ground truth):
public static void main(String[] args){
  String path="String_Node_Str";
  try {
    path=SkilltreeCreator.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath();
  }
 catch (  URISyntaxException e) {
    e.printStackTrace();
  }
  path=path.replace("String_Node_Str","String_Node_Str").replace("String_Node_Str",File.separator).substring(1);
  File bukkitFile=new File(path);
  try {
    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
  }
 catch (  Exception ignored) {
  }
  Image logoImage=new ImageIcon(ClassLoader.getSystemResource("String_Node_Str")).getImage();
  try {
    Class.forName("String_Node_Str");
  }
 catch (  ClassNotFoundException e) {
    String[] buttons={"String_Node_Str","String_Node_Str"};
    int result=JOptionPane.showOptionDialog(null,"String_Node_Str" + "String_Node_Str" + "String_Node_Str" + bukkitFile.getAbsolutePath() + "String_Node_Str"+ bukkitFile.getParent(),"String_Node_Str",JOptionPane.ERROR_MESSAGE,0,null,buttons,buttons[1]);
    if (result == 0) {
      System.exit(0);
    }
 else     if (result == 1) {
      bukkitDownloader=new BukkitDownloader();
      bukkitDownloaderFrame=new JFrame("String_Node_Str");
      bukkitDownloaderFrame.setContentPane(bukkitDownloader.downloaderPanel);
      bukkitDownloaderFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      bukkitDownloaderFrame.setIconImage(logoImage);
      bukkitDownloaderFrame.pack();
      bukkitDownloaderFrame.setVisible(true);
      bukkitDownloaderFrame.setLocationRelativeTo(null);
      bukkitDownloader.startDownload();
    }
    return;
  }
  MyPetSkillTreeConfig.setConfigPath(bukkitFile.getAbsolutePath() + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str");
  MyPetSkillTreeConfig.loadSkillTrees();
  skilltreeCreator=new SkilltreeCreator();
  skilltreeCreatorFrame=new JFrame("String_Node_Str");
  skilltreeCreatorFrame.setContentPane(skilltreeCreator.skilltreeCreatorPanel);
  skilltreeCreatorFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  skilltreeCreatorFrame.setIconImage(logoImage);
  skilltreeCreatorFrame.pack();
  skilltreeCreatorFrame.setVisible(true);
  skilltreeCreatorFrame.setLocationRelativeTo(null);
  levelCreator=new LevelCreator(skilltreeCreatorFrame);
  levelCreatorFrame=levelCreator.getFrame();
  levelCreatorFrame.setContentPane(levelCreator.getMainPanel());
  levelCreatorFrame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
  levelCreatorFrame.setIconImage(logoImage);
  levelCreatorFrame.pack();
  levelCreatorFrame.setLocationRelativeTo(null);
  levelCreatorFrame.addWindowListener(new WindowListener(){
    public void windowOpened(    WindowEvent e){
    }
    public void windowClosing(    WindowEvent e){
      skilltreeCreatorFrame.setEnabled(true);
    }
    public void windowClosed(    WindowEvent e){
    }
    public void windowIconified(    WindowEvent e){
    }
    public void windowDeiconified(    WindowEvent e){
    }
    public void windowActivated(    WindowEvent e){
    }
    public void windowDeactivated(    WindowEvent e){
    }
  }
);
}