Program: 134009
Project: 134009
Buggy source:
@Override public void execute(CommandSender sender,List<String> args){
  if (!correctLength(sender,args.size(),1,2)) {
    return;
  }
 else   if (args.size() == 1) {
    if (!hasPermission(sender) || !isPlayer(sender)) {
      return;
    }
    BendingPlayer bPlayer=GeneralMethods.getBendingPlayer(sender.getName());
    if (bPlayer == null) {
      GeneralMethods.createBendingPlayer(((Player)sender).getUniqueId(),sender.getName());
      bPlayer=GeneralMethods.getBendingPlayer(sender.getName());
    }
    if (bPlayer.isPermaRemoved()) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    if (!bPlayer.getElements().isEmpty() && !sender.hasPermission("String_Node_Str")) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    String element=args.get(0);
    if (Arrays.asList(Commands.elementaliases).contains(element)) {
      if (!hasPermission(sender,element)) {
        return;
      }
      add(sender,(Player)sender,element);
      return;
    }
 else {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
  }
 else   if (args.size() == 2) {
    if (!sender.hasPermission("String_Node_Str")) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    Player target=ProjectKorra.plugin.getServer().getPlayer(args.get(1));
    if (!target.isOnline()) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    String element=args.get(0);
    if (Arrays.asList(Commands.elementaliases).contains(element)) {
      add(sender,target,element);
      return;
    }
 else {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
    }
  }
}

Fixed version (ground truth):
@Override public void execute(CommandSender sender,List<String> args){
  if (!correctLength(sender,args.size(),1,2)) {
    return;
  }
 else   if (args.size() == 1) {
    if (!hasPermission(sender) || !isPlayer(sender)) {
      return;
    }
    BendingPlayer bPlayer=GeneralMethods.getBendingPlayer(sender.getName());
    if (bPlayer == null) {
      GeneralMethods.createBendingPlayer(((Player)sender).getUniqueId(),sender.getName());
      bPlayer=GeneralMethods.getBendingPlayer(sender.getName());
    }
    if (bPlayer.isPermaRemoved()) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    if (!bPlayer.getElements().isEmpty() && !sender.hasPermission("String_Node_Str")) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    String element=args.get(0);
    if (Arrays.asList(Commands.elementaliases).contains(element)) {
      if (!hasPermission(sender,element)) {
        return;
      }
      add(sender,(Player)sender,element);
      return;
    }
 else {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
  }
 else   if (args.size() == 2) {
    if (!sender.hasPermission("String_Node_Str")) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    Player target=ProjectKorra.plugin.getServer().getPlayer(args.get(1));
    if (target == null || !target.isOnline()) {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
      return;
    }
    String element=args.get(0);
    if (Arrays.asList(Commands.elementaliases).contains(element)) {
      add(sender,target,element);
      return;
    }
 else {
      sender.sendMessage(ChatColor.RED + "String_Node_Str");
    }
  }
}