Program: 49890
Project: 49890
Buggy source:
public CustomSetupPanel(String variantName){
  mDropManager=new DropManager();
  mGlobalGlassPane=new GlassPane();
  mGlobalGlassPane.setOpaque(false);
  Driver.getInstance().setGlassPane(mGlobalGlassPane);
  m_motionAdapter=new MotionAdapter(mGlobalGlassPane);
  Game gameToEdit=null;
  if (variantName != null) {
    gameToEdit=Builder.newGame(variantName);
    mBuilder=new Builder(variantName);
    mWhiteTeam=gameToEdit.getWhiteTeam();
    mBlackTeam=gameToEdit.getBlackTeam();
    mWhiteRules=gameToEdit.getWhiteRules();
    mBlackRules=gameToEdit.getBlackRules();
    mWhitePromotionMap=gameToEdit.getWhitePromotionMap();
    if (mWhitePromotionMap == null)     mWhitePromotionMap=Maps.newHashMap();
    mBlackPromotionMap=gameToEdit.getBlackPromotionMap();
    if (mBlackPromotionMap == null)     mBlackPromotionMap=Maps.newHashMap();
    mBoardPanels=new JPanel[gameToEdit.getBoards().length];
    for (int i=0; i < mBoardPanels.length; i++)     mBoardPanels[i]=new JPanel();
  }
 else {
    mBuilder=new Builder(Messages.getString("String_Node_Str"));
    mWhiteTeam=Lists.newArrayList();
    mBlackTeam=Lists.newArrayList();
    mWhiteRules=new Rules(false);
    mBlackRules=new Rules(true);
    mWhitePromotionMap=Maps.newHashMap();
    mBlackPromotionMap=Maps.newHashMap();
    mBoardPanels=new JPanel[]{new JPanel(),new JPanel()};
  }
  Board board=new Board(2,1,false);
  mPieceDisplaySquares[WHITE_INDEX]=board.getSquare(1,1);
  mPieceDisplaySquares[BLACK_INDEX]=board.getSquare(2,1);
  mOptionsFrame=new JFrame();
  mOptionsFrame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
  mScrollPane.setPreferredSize(new Dimension(200,200));
  initGUIComponents(gameToEdit,variantName);
}

Fixed version (ground truth):
public CustomSetupPanel(String variantName){
  mDropManager=new DropManager();
  mGlobalGlassPane=new GlassPane();
  mGlobalGlassPane.setOpaque(false);
  Driver.getInstance().setGlassPane(mGlobalGlassPane);
  m_motionAdapter=new MotionAdapter(mGlobalGlassPane);
  Game gameToEdit=null;
  if (variantName != null) {
    gameToEdit=Builder.newGame(variantName);
    mWhiteTeam=gameToEdit.getWhiteTeam();
    mBlackTeam=gameToEdit.getBlackTeam();
    mWhiteRules=gameToEdit.getWhiteRules();
    mBlackRules=gameToEdit.getBlackRules();
    mWhitePromotionMap=gameToEdit.getWhitePromotionMap();
    if (mWhitePromotionMap == null)     mWhitePromotionMap=Maps.newHashMap();
    mBlackPromotionMap=gameToEdit.getBlackPromotionMap();
    if (mBlackPromotionMap == null)     mBlackPromotionMap=Maps.newHashMap();
    mBoardPanels=new JPanel[gameToEdit.getBoards().length];
    for (int i=0; i < mBoardPanels.length; i++)     mBoardPanels[i]=new JPanel();
    mBuilder=new Builder(variantName,gameToEdit.getBoards(),mWhiteTeam,mBlackTeam,mWhiteRules,mBlackRules);
  }
 else {
    mBuilder=new Builder(Messages.getString("String_Node_Str"));
    mWhiteTeam=Lists.newArrayList();
    mBlackTeam=Lists.newArrayList();
    mWhiteRules=new Rules(false);
    mBlackRules=new Rules(true);
    mWhitePromotionMap=Maps.newHashMap();
    mBlackPromotionMap=Maps.newHashMap();
    mBoardPanels=new JPanel[]{new JPanel(),new JPanel()};
    mBuilder.mBlackTeam=mBlackTeam;
    mBuilder.mWhiteTeam=mWhiteTeam;
  }
  Board board=new Board(2,1,false);
  mPieceDisplaySquares[WHITE_INDEX]=board.getSquare(1,1);
  mPieceDisplaySquares[BLACK_INDEX]=board.getSquare(2,1);
  mOptionsFrame=new JFrame();
  mOptionsFrame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
  mScrollPane.setPreferredSize(new Dimension(200,200));
  initGUIComponents(gameToEdit,variantName);
}