Program: 17766
Project: 17766
Buggy source:
public ErrorDialog(Frame owner,Throwable t,MLMethod network,NeuralDataSet dataset){
  super(owner);
  this.setSize(640,480);
  setTitle("String_Node_Str");
  this.text=new JTextArea();
  this.text.setFont(EncogFonts.getInstance().getCodeFont());
  this.text.setEditable(false);
  this.scroll=new JScrollPane(this.text);
  getContentPane().add(this.scroll);
  StringBuilder message=new StringBuilder();
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  if (network != null) {
    message.append(network.toString() + NEW_LINE);
    message.append("String_Node_Str" + NEW_LINE);
  }
  if (dataset != null) {
    message.append(dataset.toString() + NEW_LINE);
    message.append("String_Node_Str" + dataset.getInputSize() + NEW_LINE);
    message.append("String_Node_Str" + dataset.getIdealSize() + NEW_LINE);
    message.append("String_Node_Str" + NEW_LINE);
  }
  message.append("String_Node_Str" + Encog.getInstance().getProperties().get(Encog.ENCOG_VERSION) + NEW_LINE);
  message.append("String_Node_Str" + EncogWorkBench.VERSION + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + Runtime.getRuntime().availableProcessors() + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append(getCustomStackTrace(t));
  this.text.setText(message.toString());
  this.text.setSelectionStart(0);
  this.text.setSelectionEnd(0);
}

Fixed version (ground truth):
public ErrorDialog(Frame owner,Throwable t,ProjectFile network,NeuralDataSet dataset){
  super(owner);
  this.setSize(640,480);
  setTitle("String_Node_Str");
  this.text=new JTextArea();
  this.text.setFont(EncogFonts.getInstance().getCodeFont());
  this.text.setEditable(false);
  this.scroll=new JScrollPane(this.text);
  getContentPane().add(this.scroll);
  StringBuilder message=new StringBuilder();
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  if (network != null) {
    message.append(network.toString() + NEW_LINE);
    message.append("String_Node_Str" + NEW_LINE);
  }
  if (dataset != null) {
    message.append(dataset.toString() + NEW_LINE);
    message.append("String_Node_Str" + dataset.getInputSize() + NEW_LINE);
    message.append("String_Node_Str" + dataset.getIdealSize() + NEW_LINE);
    message.append("String_Node_Str" + NEW_LINE);
  }
  message.append("String_Node_Str" + Encog.getInstance().getProperties().get(Encog.ENCOG_VERSION) + NEW_LINE);
  message.append("String_Node_Str" + EncogWorkBench.VERSION + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + System.getProperty("String_Node_Str") + NEW_LINE);
  message.append("String_Node_Str" + Runtime.getRuntime().availableProcessors() + NEW_LINE);
  message.append("String_Node_Str" + NEW_LINE);
  message.append(getCustomStackTrace(t));
  this.text.setText(message.toString());
  this.text.setSelectionStart(0);
  this.text.setSelectionEnd(0);
}