Program: 44867
Project: 44867
Buggy source:
public boolean onCommand(CommandSender commandSender,Command command,String s,String[] args){
  if (!(commandSender instanceof Player)) {
    commandSender.sendMessage("String_Node_Str");
    return true;
  }
  Player player=(Player)commandSender;
  if (!player.hasPermission("String_Node_Str")) {
    commandSender.sendMessage(ChatColor.RED + "String_Node_Str");
  }
  if (args.length == 0) {
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    return true;
  }
  int range=Math.min(args.length == 2 ? Integer.parseInt(args[1]) : plugin.defaultSearchRange,plugin.maximumSearchRange);
  player.sendMessage(ChatColor.GOLD + "String_Node_Str" + args[0]+ "String_Node_Str"+ range+ "String_Node_Str");
  Location loc=player.getLocation().clone();
  ItemStack toSearch=null;
  String[] parts=args[0].split("String_Node_Str");
  try {
    Integer i=Integer.parseInt(parts[0]);
    Integer i2=parts.length > 1 ? Integer.parseInt(parts[1]) : 0;
    toSearch=new ItemStack(i,1,i2.shortValue());
  }
 catch (  NumberFormatException e) {
    String owner="String_Node_Str";
    String itemName;
    Integer data;
    itemName=parts[0];
    data=parts.length > 1 ? Integer.parseInt(parts[1]) : 0;
    Material m=Material.valueOf(itemName.toUpperCase());
    if (m != null) {
      toSearch=new ItemStack(m,1,data.shortValue());
    }
  }
  if (toSearch == null) {
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    return true;
  }
  Set<Location> foundInventories=new HashSet<Location>();
  for (int x=loc.getBlockX() - range; x < loc.getBlockX() + range; x++) {
    for (int y=loc.getBlockY() - range; y < loc.getBlockY() + range; y++) {
      for (int z=loc.getBlockZ() - range; z < loc.getBlockZ() + range; z++) {
        if (y > 0 && y < loc.getWorld().getMaxHeight()) {
          Block b=loc.getWorld().getBlockAt(x,y,z);
          if (b != null) {
            BlockState blockState=b.getState();
            if (blockState instanceof InventoryHolder) {
              if (plugin.useZones && !plugin.getZonesHelper().checkPermission(player,b))               continue;
              InventoryHolder inv=(InventoryHolder)blockState;
              if (doesInventoryHaveItem(inv.getInventory(),toSearch)) {
                foundInventories.add(b.getLocation().clone());
              }
            }
          }
        }
      }
    }
  }
  if (foundInventories.size() > 0) {
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    if (player.getListeningPluginChannels().contains(plugin.pluginMessageChannel)) {
      ByteArrayOutputStream buf=new ByteArrayOutputStream();
      buf.write((byte)20);
      for (      Location location : foundInventories) {
        StringBuilder sb=new StringBuilder();
        sb.append(location.getBlockX()).append("String_Node_Str").append(location.getBlockY()).append("String_Node_Str").append(location.getBlockZ());
        try {
          buf.write(sb.toString().getBytes("String_Node_Str"));
          buf.write((byte)0);
        }
 catch (        Exception ex) {
        }
      }
      player.sendPluginMessage(plugin,plugin.pluginMessageChannel,buf.toByteArray());
    }
 else {
      for (      Location location : foundInventories) {
        StringBuilder sb=new StringBuilder();
        sb.append(location.getBlockX()).append("String_Node_Str").append(location.getBlockY()).append("String_Node_Str").append(location.getBlockZ());
        player.sendMessage(ChatColor.YELLOW + "String_Node_Str" + sb.toString());
      }
    }
  }
 else {
    player.sendMessage(ChatColor.RED + "String_Node_Str");
  }
  return true;
}

Fixed version (ground truth):
public boolean onCommand(CommandSender commandSender,Command command,String s,String[] args){
  if (!(commandSender instanceof Player)) {
    commandSender.sendMessage("String_Node_Str");
    return true;
  }
  Player player=(Player)commandSender;
  if (!player.hasPermission("String_Node_Str")) {
    commandSender.sendMessage(ChatColor.RED + "String_Node_Str");
    return true;
  }
  if (args.length == 0) {
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    return true;
  }
  if (args.length == 1 && args[0].equalsIgnoreCase("String_Node_Str") && player.getListeningPluginChannels().contains(plugin.pluginMessageChannel)) {
    player.sendPluginMessage(plugin,plugin.pluginMessageChannel,new byte[]{20});
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    return true;
  }
  int range=Math.min(args.length == 2 ? Integer.parseInt(args[1]) : plugin.defaultSearchRange,plugin.maximumSearchRange);
  player.sendMessage(ChatColor.GOLD + "String_Node_Str" + args[0]+ "String_Node_Str"+ range+ "String_Node_Str");
  Location loc=player.getLocation().clone();
  ItemStack toSearch=null;
  String[] parts=args[0].split("String_Node_Str");
  try {
    Integer i=Integer.parseInt(parts[0]);
    Integer i2=parts.length > 1 ? Integer.parseInt(parts[1]) : 0;
    toSearch=new ItemStack(i,1,i2.shortValue());
  }
 catch (  NumberFormatException e) {
    String owner="String_Node_Str";
    String itemName;
    Integer data;
    itemName=parts[0];
    data=parts.length > 1 ? Integer.parseInt(parts[1]) : 0;
    try {
      Material m=Material.valueOf(itemName.toUpperCase());
      if (m != null) {
        toSearch=new ItemStack(m,1,data.shortValue());
      }
    }
 catch (    IllegalArgumentException ex) {
      toSearch=plugin.getTweakcraftUtilsHelper().searchItem(parts[0]);
    }
  }
  if (toSearch == null) {
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    return true;
  }
  Set<Location> foundInventories=new HashSet<Location>();
  for (int x=loc.getBlockX() - range; x < loc.getBlockX() + range; x++) {
    for (int y=loc.getBlockY() - range; y < loc.getBlockY() + range; y++) {
      for (int z=loc.getBlockZ() - range; z < loc.getBlockZ() + range; z++) {
        if (y > 0 && y < loc.getWorld().getMaxHeight()) {
          Block b=loc.getWorld().getBlockAt(x,y,z);
          if (b != null) {
            BlockState blockState=b.getState();
            if (blockState instanceof InventoryHolder) {
              if (plugin.useZones && !plugin.getZonesHelper().checkPermission(player,b))               continue;
              InventoryHolder inv=(InventoryHolder)blockState;
              if (doesInventoryHaveItem(inv.getInventory(),toSearch)) {
                foundInventories.add(b.getLocation().clone());
              }
            }
          }
        }
      }
    }
  }
  if (foundInventories.size() > 0) {
    player.sendMessage(ChatColor.GOLD + "String_Node_Str");
    if (player.getListeningPluginChannels().contains(plugin.pluginMessageChannel)) {
      ByteArrayOutputStream buf=new ByteArrayOutputStream();
      buf.write((byte)20);
      for (      Location location : foundInventories) {
        StringBuilder sb=new StringBuilder();
        sb.append(location.getBlockX()).append("String_Node_Str").append(location.getBlockY()).append("String_Node_Str").append(location.getBlockZ());
        try {
          buf.write(sb.toString().getBytes("String_Node_Str"));
          buf.write((byte)0);
        }
 catch (        Exception ex) {
        }
      }
      player.sendPluginMessage(plugin,plugin.pluginMessageChannel,buf.toByteArray());
    }
 else {
      for (      Location location : foundInventories) {
        StringBuilder sb=new StringBuilder();
        sb.append(location.getBlockX()).append("String_Node_Str").append(location.getBlockY()).append("String_Node_Str").append(location.getBlockZ());
        player.sendMessage(ChatColor.YELLOW + "String_Node_Str" + sb.toString());
      }
    }
  }
 else {
    player.sendMessage(ChatColor.RED + "String_Node_Str");
  }
  return true;
}