Program: 21107
Project: 21107
Buggy source:
public void mousePressed(MouseEvent e){
  if (e.getSource() != this)   return;
  Point point=e.getPoint();
  int row=rowAtPoint(point);
  int col=getRealcolumnAtPoint(e.getX());
  if (getPathForRow(row) == null) {
    getTreeSelectionModel().clearSelection();
    if (e.getButton() == MouseEvent.BUTTON3) {
      JPopupMenu popup=new JPopupMenu();
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.ADD_ALL)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.DELETE_OFFLINE)));
      popup.add(buildExtMenu());
      if (popup.getComponentCount() != 0)       popup.show(this,point.x,point.y);
    }
    return;
  }
  if (!isRowSelected(row) && e.getButton() == MouseEvent.BUTTON3) {
    getTreeSelectionModel().clearSelection();
    getTreeSelectionModel().addSelectionPath(getPathForRow(row));
  }
  if (e.isPopupTrigger() || e.getButton() == MouseEvent.BUTTON3) {
    ArrayList<DownloadLink> alllinks=getAllSelectedDownloadLinks();
    int links_enabled=0;
    for (    DownloadLink next : alllinks) {
      if (next.isEnabled()) {
        links_enabled++;
      }
    }
    int links_disabled=alllinks.size() - links_enabled;
    ArrayList<LinkGrabberFilePackage> sfp=getSelectedFilePackages();
    Object obj=getPathForRow(row).getLastPathComponent();
    JPopupMenu popup=new JPopupMenu();
    if (obj instanceof LinkGrabberFilePackage || obj instanceof DownloadLink) {
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.ADD_ALL)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.DELETE_OFFLINE)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.DELETE,new Property("String_Node_Str",alllinks))));
      if (sfp.size() > 0) {
        popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str",LinkGrabberTreeTableAction.ADD_SELECTED_PACKAGES)));
      }
 else {
        popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.ADD_SELECTED_LINKS,new Property("String_Node_Str",alllinks))));
      }
      popup.add(new JSeparator());
    }
    if (obj instanceof LinkGrabberFilePackage) {
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SPLIT_HOSTER)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str",LinkGrabberTreeTableAction.EDIT_DIR)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str"+ this.getModel().getColumnName(col)+ "String_Node_Str",LinkGrabberTreeTableAction.SORT,new Property("String_Node_Str",col))));
      popup.add(new JSeparator());
    }
    if (obj instanceof LinkGrabberFilePackage || obj instanceof DownloadLink) {
      popup.add(buildpriomenu(alllinks));
      popup.add(buildExtMenu());
      Set<String> hoster=linkgrabber.getHosterList(alllinks);
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + hoster.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SELECT_HOSTER,new Property("String_Node_Str",hoster))));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.NEW_PACKAGE,new Property("String_Node_Str",alllinks))));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.MERGE_PACKAGE,new Property("String_Node_Str",alllinks))));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SET_PW,new Property("String_Node_Str",alllinks))));
      popup.add(new JSeparator());
      HashMap<String,Object> prop=new HashMap<String,Object>();
      prop.put("String_Node_Str",alllinks);
      prop.put("String_Node_Str",true);
      if (links_disabled > 0)       popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + links_disabled+ "String_Node_Str",LinkGrabberTreeTableAction.DE_ACTIVATE,new Property("String_Node_Str",prop))));
      prop=new HashMap<String,Object>();
      prop.put("String_Node_Str",alllinks);
      prop.put("String_Node_Str",false);
      if (links_enabled > 0)       popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + links_enabled+ "String_Node_Str",LinkGrabberTreeTableAction.DE_ACTIVATE,new Property("String_Node_Str",prop))));
    }
    if (popup.getComponentCount() != 0)     popup.show(this,point.x,point.y);
  }
}

Fixed version (ground truth):
public void mousePressed(MouseEvent e){
  if (e.getSource() != this)   return;
  Point point=e.getPoint();
  int row=rowAtPoint(point);
  int col=getRealcolumnAtPoint(e.getX());
  if (getPathForRow(row) == null) {
    getTreeSelectionModel().clearSelection();
    if (e.getButton() == MouseEvent.BUTTON3) {
      JPopupMenu popup=new JPopupMenu();
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.ADD_ALL)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.DELETE_OFFLINE)));
      popup.add(buildExtMenu());
      if (popup.getComponentCount() != 0)       popup.show(this,point.x,point.y);
    }
    return;
  }
  if (!isRowSelected(row) && e.getButton() == MouseEvent.BUTTON3) {
    getTreeSelectionModel().clearSelection();
    getTreeSelectionModel().addSelectionPath(getPathForRow(row));
  }
  if (e.isPopupTrigger() || e.getButton() == MouseEvent.BUTTON3) {
    ArrayList<DownloadLink> alllinks=getAllSelectedDownloadLinks();
    int links_enabled=0;
    for (    DownloadLink next : alllinks) {
      if (next.isEnabled()) {
        links_enabled++;
      }
    }
    int links_disabled=alllinks.size() - links_enabled;
    ArrayList<LinkGrabberFilePackage> sfp=getSelectedFilePackages();
    Object obj=getPathForRow(row).getLastPathComponent();
    JPopupMenu popup=new JPopupMenu();
    if (obj instanceof LinkGrabberFilePackage || obj instanceof DownloadLink) {
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.ADD_ALL)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str"),LinkGrabberTreeTableAction.DELETE_OFFLINE)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.DELETE,new Property("String_Node_Str",alllinks))));
      if (sfp.size() > 0) {
        popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str",LinkGrabberTreeTableAction.ADD_SELECTED_PACKAGES)));
      }
 else {
        popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.ADD_SELECTED_LINKS,new Property("String_Node_Str",alllinks))));
      }
      popup.add(new JSeparator());
    }
    if (obj instanceof LinkGrabberFilePackage) {
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SPLIT_HOSTER)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str",LinkGrabberTreeTableAction.EDIT_DIR)));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + sfp.size()+ "String_Node_Str"+ this.getModel().getColumnName(col)+ "String_Node_Str",LinkGrabberTreeTableAction.SORT,new Property("String_Node_Str",col))));
      popup.add(new JSeparator());
    }
    if (obj instanceof LinkGrabberFilePackage || obj instanceof DownloadLink) {
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SAVE_DLC,new Property("String_Node_Str",alllinks))));
      popup.add(buildpriomenu(alllinks));
      popup.add(buildExtMenu());
      Set<String> hoster=linkgrabber.getHosterList(alllinks);
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + hoster.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SELECT_HOSTER,new Property("String_Node_Str",hoster))));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.NEW_PACKAGE,new Property("String_Node_Str",alllinks))));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.MERGE_PACKAGE,new Property("String_Node_Str",alllinks))));
      popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + alllinks.size()+ "String_Node_Str",LinkGrabberTreeTableAction.SET_PW,new Property("String_Node_Str",alllinks))));
      popup.add(new JSeparator());
      HashMap<String,Object> prop=new HashMap<String,Object>();
      prop.put("String_Node_Str",alllinks);
      prop.put("String_Node_Str",true);
      if (links_disabled > 0)       popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + links_disabled+ "String_Node_Str",LinkGrabberTreeTableAction.DE_ACTIVATE,new Property("String_Node_Str",prop))));
      prop=new HashMap<String,Object>();
      prop.put("String_Node_Str",alllinks);
      prop.put("String_Node_Str",false);
      if (links_enabled > 0)       popup.add(new JMenuItem(new LinkGrabberTreeTableAction(linkgrabber,JDTheme.II("String_Node_Str",16,16),JDLocale.L("String_Node_Str","String_Node_Str") + "String_Node_Str" + links_enabled+ "String_Node_Str",LinkGrabberTreeTableAction.DE_ACTIVATE,new Property("String_Node_Str",prop))));
    }
    if (popup.getComponentCount() != 0)     popup.show(this,point.x,point.y);
  }
}