Program: 86341
Project: 86341
Buggy source:
@Override protected void handleCommandUnspecific(CommandSender sender,String[] args) throws CommandException {
  char[] plating=new char[52];
  Arrays.fill(plating,' ');
  String boilerPlate=ChatColor.YELLOW + ChatColor.STRIKETHROUGH.toString() + new String(plating);
  StringBuilder moduleList=new StringBuilder();
  StringBuilder thirdParty=new StringBuilder();
  for (  Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
    if (plugin instanceof ModularPlugin) {
      ModularPlugin modularPlugin=(ModularPlugin)plugin;
      moduleList.append(modularPlugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED).append(modularPlugin.getMeta().name()).append(ChatColor.YELLOW).append("String_Node_Str");
    }
 else     if (!(plugin instanceof Core)) {
      List<String> authors=plugin.getDescription().getAuthors();
      StringBuilder author=new StringBuilder();
      for (      String s : authors) {
        author.append(s).append("String_Node_Str");
      }
      String authorsString=author.toString();
      authorsString=authorsString.substring(0,Math.max(0,authorsString.length() - 2));
      thirdParty.append(plugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED).append(plugin.getName());
      if (authorsString.length() > 0)       thirdParty.append("String_Node_Str").append(authorsString);
      thirdParty.append(ChatColor.RED).append("String_Node_Str");
    }
  }
  String modules=moduleList.toString();
  modules=modules.substring(0,modules.length() - 2);
  String plugins=thirdParty.toString();
  plugins=plugins.substring(0,plugins.length() - 2);
  CoreEssentials moduleProvider=Core.getInstance().getModuleProvider(CoreEssentials.class);
  sender.sendMessage(boilerPlate);
  sender.sendMessage(moduleProvider.getFormat("String_Node_Str",false,new String[]{"String_Node_Str",Core.getInstance().getDescription().getVersion()}));
  sender.sendMessage("String_Node_Str");
  sender.sendMessage(moduleProvider.getFormat("String_Node_Str",false,new String[]{"String_Node_Str",modules}));
  sender.sendMessage("String_Node_Str");
  sender.sendMessage(moduleProvider.getFormat("String_Node_Str",false,new String[]{"String_Node_Str",plugins}));
  sender.sendMessage(boilerPlate);
}

Fixed version (ground truth):
@Override protected void handleCommandUnspecific(CommandSender sender,String[] args) throws CommandException {
  char[] plating=new char[52];
  Arrays.fill(plating,' ');
  String boilerPlate=ChatColor.YELLOW + ChatColor.STRIKETHROUGH.toString() + new String(plating);
  StringBuilder moduleList=new StringBuilder();
  StringBuilder thirdParty=new StringBuilder();
  for (  Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
    if (plugin instanceof ModularPlugin) {
      ModularPlugin modularPlugin=(ModularPlugin)plugin;
      moduleList.append(modularPlugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED).append(modularPlugin.getMeta().name()).append(ChatColor.YELLOW).append("String_Node_Str");
    }
 else     if (!(plugin instanceof Core)) {
      List<String> authors=plugin.getDescription().getAuthors();
      StringBuilder author=new StringBuilder();
      for (      String s : authors) {
        author.append(s).append("String_Node_Str");
      }
      String authorsString=author.toString();
      authorsString=authorsString.substring(0,Math.max(0,authorsString.length() - 2));
      thirdParty.append(plugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED).append(plugin.getName());
      if (authorsString.length() > 0)       thirdParty.append("String_Node_Str").append(authorsString);
      thirdParty.append(ChatColor.RED).append("String_Node_Str");
    }
  }
  String modules=moduleList.toString();
  modules=modules.substring(0,Math.max(0,modules.length() - 2));
  String plugins=thirdParty.toString();
  plugins=plugins.substring(0,Math.max(0,plugins.length() - 2));
  CoreEssentials moduleProvider=Core.getInstance().getModuleProvider(CoreEssentials.class);
  sender.sendMessage(boilerPlate);
  sender.sendMessage(moduleProvider.getFormat("String_Node_Str",false,new String[]{"String_Node_Str",Core.getInstance().getDescription().getVersion()}));
  sender.sendMessage("String_Node_Str");
  sender.sendMessage(moduleProvider.getFormat("String_Node_Str",false,new String[]{"String_Node_Str",modules}));
  sender.sendMessage("String_Node_Str");
  sender.sendMessage(moduleProvider.getFormat("String_Node_Str",false,new String[]{"String_Node_Str",plugins}));
  sender.sendMessage(boilerPlate);
}