Program: 21046
Project: 21046
Buggy source:
/** 
 * @return true wenn erfolgreich geladen wurde
 */
public boolean start(){
  try {
    loadinfo=getLoadInfo();
    if (loadinfo == null)     return false;
    final JDialog dialog=new GuiRunnable<JDialog>(){
      public JDialog runSave(){
        return new JDialog(owner);
      }
    }
.getReturnValue();
    dialog.setModal(true);
    dialog.setAlwaysOnTop(true);
    br.getPage(loadinfo.link);
    if (host == null) {
      host=br.getHost().toLowerCase();
      if (host.matches("String_Node_Str"))       host=host.substring(host.indexOf('.') + 1);
    }
    if (dir == null)     dir=JDUtilities.getJDHomeDirectoryFromEnvironment().getAbsolutePath() + "String_Node_Str" + host+ "String_Node_Str";
    new File(dir).mkdir();
    if (loadDirect()) {
      if (opendir)       openDir(dir);
      return true;
    }
    dialog.setTitle(JDL.L("String_Node_Str","String_Node_Str"));
    images=getAllImages(br);
    loadImages();
    dialog.addWindowListener(new WindowListener(){
      public void windowActivated(      WindowEvent e){
      }
      public void windowClosed(      WindowEvent e){
      }
      public void windowClosing(      WindowEvent e){
        for (        LoadImage loadImage : images) {
          loadImage.file.delete();
        }
        dialog.dispose();
      }
      public void windowDeactivated(      WindowEvent e){
      }
      public void windowDeiconified(      WindowEvent e){
      }
      public void windowIconified(      WindowEvent e){
      }
      public void windowOpened(      WindowEvent e){
      }
    }
);
    final ArrayList<JButton> bts=new ArrayList<JButton>();
    for (int j=0; j < images.size(); j++) {
      final LoadImage f=images.get(j);
      if (f == null || f.file == null || !f.file.exists() || f.file.length() < 100)       continue;
      final BufferedImage captchaImage=JDImage.getImage(f.file);
      if (captchaImage == null) {
        f.file.delete();
        continue;
      }
      int area=captchaImage.getHeight(null) * captchaImage.getHeight(null);
      if (area < 50 || area > 50000 || captchaImage.getHeight(null) > 400 || captchaImage.getWidth(null) > 400 || captchaImage.getWidth(null) < 10 || captchaImage.getHeight(null) < 5) {
        f.file.delete();
        continue;
      }
      double faktor=Math.max((double)captchaImage.getWidth(null) / 100,(double)captchaImage.getHeight(null) / 100);
      final int width=(int)(captchaImage.getWidth(null) / faktor);
      final int height=(int)(captchaImage.getHeight(null) / faktor);
      JButton ic=new GuiRunnable<JButton>(){
        public JButton runSave(){
          return new JButton(new ImageIcon(captchaImage.getScaledInstance(width,height,Image.SCALE_SMOOTH)));
        }
      }
.getReturnValue();
      ic.addActionListener(new ActionListener(){
        public void actionPerformed(        ActionEvent e){
          selectedImage=f;
        }
      }
);
      bts.add(ic);
    }
    final JPanel panel=new GuiRunnable<JPanel>(){
      public JPanel runSave(){
        return new JPanel(new GridLayout((int)Math.ceil(((double)bts.size()) / 5),5));
      }
    }
.getReturnValue();
    for (    JButton button : bts) {
      panel.add(button);
    }
    new GuiRunnable<Object>(){
      public Object runSave(){
        dialog.add(new JScrollPane(panel));
        dialog.pack();
        dialog.setLocation(Screen.getCenterOfComponent(owner,dialog));
        dialog.setAlwaysOnTop(true);
        dialog.setVisible(true);
        return null;
      }
    }
.waitForEDT();
    if (selectedImage != null && selectedImage.file != null) {
      loadProcess();
      if (opendir)       openDir(dir);
      return dir.length() > 0;
    }
 else     return false;
  }
 catch (  Exception e) {
    e.printStackTrace();
  }
  return false;
}

Fixed version (ground truth):
/** 
 * @return true wenn erfolgreich geladen wurde
 */
public boolean start(){
  try {
    loadinfo=getLoadInfo();
    if (loadinfo == null)     return false;
    final JDialog dialog=new GuiRunnable<JDialog>(){
      public JDialog runSave(){
        return new JDialog(owner);
      }
    }
.getReturnValue();
    dialog.setModal(true);
    dialog.setAlwaysOnTop(true);
    br.getPage(loadinfo.link);
    if (host == null) {
      host=br.getHost().toLowerCase();
      if (host.matches("String_Node_Str"))       host=host.substring(host.indexOf('.') + 1);
    }
    if (dir == null)     dir=JDUtilities.getJDHomeDirectoryFromEnvironment().getAbsolutePath() + "String_Node_Str" + host+ "String_Node_Str";
    new File(dir).mkdir();
    if (loadDirect()) {
      if (opendir)       openDir(dir);
      return true;
    }
    dialog.setTitle(JDL.L("String_Node_Str","String_Node_Str"));
    images=getAllImages(br);
    loadImages();
    dialog.addWindowListener(new WindowListener(){
      public void windowActivated(      WindowEvent e){
      }
      public void windowClosed(      WindowEvent e){
      }
      public void windowClosing(      WindowEvent e){
        for (        LoadImage loadImage : images) {
          loadImage.file.delete();
        }
        dialog.dispose();
      }
      public void windowDeactivated(      WindowEvent e){
      }
      public void windowDeiconified(      WindowEvent e){
      }
      public void windowIconified(      WindowEvent e){
      }
      public void windowOpened(      WindowEvent e){
      }
    }
);
    final ArrayList<JButton> bts=new ArrayList<JButton>();
    for (int j=0; j < images.size(); j++) {
      final LoadImage f=images.get(j);
      if (f == null || f.file == null || !f.file.exists() || f.file.length() < 100)       continue;
      final BufferedImage captchaImage=JDImage.getImage(f.file);
      if (captchaImage == null) {
        f.file.delete();
        continue;
      }
      int area=captchaImage.getHeight(null) * captchaImage.getHeight(null);
      if (area < 50 || area > 50000 || captchaImage.getHeight(null) > 400 || captchaImage.getWidth(null) > 400 || captchaImage.getWidth(null) < 10 || captchaImage.getHeight(null) < 5) {
        f.file.delete();
        continue;
      }
      double faktor=Math.max((double)captchaImage.getWidth(null) / 100,(double)captchaImage.getHeight(null) / 100);
      final int width=(int)(captchaImage.getWidth(null) / faktor);
      final int height=(int)(captchaImage.getHeight(null) / faktor);
      JButton ic=new GuiRunnable<JButton>(){
        public JButton runSave(){
          return new JButton(new ImageIcon(captchaImage.getScaledInstance(width,height,Image.SCALE_SMOOTH)));
        }
      }
.getReturnValue();
      ic.addActionListener(new ActionListener(){
        public void actionPerformed(        ActionEvent e){
          selectedImage=f;
          dialog.dispose();
        }
      }
);
      bts.add(ic);
    }
    final JPanel panel=new GuiRunnable<JPanel>(){
      public JPanel runSave(){
        return new JPanel(new GridLayout((int)Math.ceil(((double)bts.size()) / 5),5));
      }
    }
.getReturnValue();
    for (    JButton button : bts) {
      panel.add(button);
    }
    new GuiRunnable<Object>(){
      public Object runSave(){
        dialog.add(new JScrollPane(panel));
        dialog.pack();
        dialog.setLocation(Screen.getCenterOfComponent(owner,dialog));
        dialog.setAlwaysOnTop(true);
        dialog.setVisible(true);
        return null;
      }
    }
.waitForEDT();
    if (selectedImage != null && selectedImage.file != null) {
      loadProcess();
      if (opendir)       openDir(dir);
      return dir.length() > 0;
    }
 else     return false;
  }
 catch (  Exception e) {
    e.printStackTrace();
  }
  return false;
}