Program: 34017
Project: 34017
Buggy source:
@Override public void onEnable(){
  plugin=this;
  Class<?> clazz;
  try {
    clazz=Class.forName("String_Node_Str");
  }
 catch (  Exception e) {
    clazz=null;
  }
  if (clazz != null) {
    onePointEight=true;
  }
  saveDefaultConfig();
  if (getConfig().getInt("String_Node_Str",-1) < 1) {
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
    }
 else {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
    }
    return;
  }
  if (!loadPluginConfig()) {
    if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
    }
 else {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
    }
    return;
  }
  if (Settings.useEconomy && !VaultHelper.setupEconomy()) {
    getLogger().warning("String_Node_Str");
    Settings.useEconomy=false;
  }
  if (!VaultHelper.setupPermissions()) {
    getLogger().severe("String_Node_Str");
    getServer().getPluginManager().disablePlugin(this);
    return;
  }
  challenges=new Challenges(this);
  playersFolder=new File(getDataFolder() + File.separator + "String_Node_Str");
  if (!playersFolder.exists()) {
    playersFolder.mkdir();
  }
  players=new PlayerCache(this);
  islandCmd=new IslandCmd(this);
  if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
    AdminCmd adminCmd=new AdminCmd(this);
    getCommand("String_Node_Str").setExecutor(islandCmd);
    getCommand("String_Node_Str").setTabCompleter(islandCmd);
    getCommand("String_Node_Str").setExecutor(getChallenges());
    getCommand("String_Node_Str").setTabCompleter(getChallenges());
    getCommand("String_Node_Str").setExecutor(adminCmd);
    getCommand("String_Node_Str").setTabCompleter(adminCmd);
  }
 else {
    AdminCmd adminCmd=new AdminCmd(this);
    getCommand("String_Node_Str").setExecutor(islandCmd);
    getCommand("String_Node_Str").setTabCompleter(islandCmd);
    getCommand("String_Node_Str").setExecutor(getChallenges());
    getCommand("String_Node_Str").setTabCompleter(getChallenges());
    getCommand("String_Node_Str").setExecutor(adminCmd);
    getCommand("String_Node_Str").setTabCompleter(adminCmd);
  }
  messages=new Messages(this);
  messages.loadMessages();
  registerEvents();
  try {
    final Metrics metrics=new Metrics(this);
    metrics.start();
  }
 catch (  final IOException localIOException) {
  }
  getServer().getScheduler().runTask(this,new Runnable(){
    @Override public void run(){
      getIslandWorld();
      getWarpSignsListener().loadWarpList();
      if (Settings.useWarpPanel) {
        warpPanel=new WarpPanel(plugin);
        getServer().getPluginManager().registerEvents(warpPanel,plugin);
      }
      getServer().getPluginManager().registerEvents(new ControlPanel(plugin),plugin);
      settingsPanel=new SettingsPanel(plugin);
      getServer().getPluginManager().registerEvents(settingsPanel,plugin);
      biomes=new BiomesPanel(plugin);
      getServer().getPluginManager().registerEvents(biomes,plugin);
      if (Bukkit.getServer().getPluginManager().isPluginEnabled("String_Node_Str")) {
        getServer().getPluginManager().registerEvents(new HeroChatListener(plugin),plugin);
      }
      if (getServer().getWorld(Settings.worldName).getGenerator() == null) {
        getLogger().severe("String_Node_Str" + plugin.getName() + "String_Node_Str");
        getLogger().severe("String_Node_Str");
        getLogger().severe("String_Node_Str");
        getLogger().severe("String_Node_Str");
        getLogger().severe("String_Node_Str" + Settings.worldName + "String_Node_Str");
        getLogger().severe("String_Node_Str" + plugin.getName());
        if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
        }
 else {
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
        }
        return;
      }
      getServer().getScheduler().runTask(plugin,new Runnable(){
        @Override public void run(){
          if (grid == null) {
            grid=new GridManager(plugin);
          }
          TopTen.topTenLoad();
          if (tinyDB == null) {
            tinyDB=new TinyDB(plugin);
          }
          for (          Player onlinePlayer : plugin.getServer().getOnlinePlayers()) {
            tinyDB.savePlayerName(onlinePlayer.getName(),onlinePlayer.getUniqueId());
          }
          getServer().getScheduler().runTaskTimer(plugin,new Runnable(){
            @Override public void run(){
              getGrid().saveGrid();
            }
          }
,Settings.backupDuration,Settings.backupDuration);
          getLogger().info("String_Node_Str");
        }
      }
);
      if (Settings.updateCheck) {
        checkUpdates();
        new BukkitRunnable(){
          int count=0;
          @Override public void run(){
            if (count++ > 10) {
              plugin.getLogger().info("String_Node_Str");
              this.cancel();
            }
 else {
              if (updateCheck != null) {
                if (updateCheck.isSuccess()) {
                  checkUpdatesNotify(null);
                }
 else {
                  plugin.getLogger().info("String_Node_Str");
                }
                this.cancel();
              }
            }
          }
        }
.runTaskTimer(plugin,0L,20L);
      }
      if (Settings.mobAcidDamage > 0D || Settings.animalAcidDamage > 0D) {
        getServer().getScheduler().scheduleSyncRepeatingTask(plugin,new Runnable(){
          @Override public void run(){
            List<Entity> entList=islandWorld.getEntities();
            for (            Entity current : entList) {
              if (plugin.isOnePointEight() && current instanceof Guardian) {
                continue;
              }
              if ((current instanceof Monster) && Settings.mobAcidDamage > 0D) {
                if ((current.getLocation().getBlock().getType() == Material.WATER) || (current.getLocation().getBlock().getType() == Material.STATIONARY_WATER)) {
                  ((Monster)current).damage(Settings.mobAcidDamage);
                }
              }
 else               if ((current instanceof Animals) && Settings.animalAcidDamage > 0D) {
                if ((current.getLocation().getBlock().getType() == Material.WATER) || (current.getLocation().getBlock().getType() == Material.STATIONARY_WATER)) {
                  if (!current.getType().equals(EntityType.CHICKEN)) {
                    ((Animals)current).damage(Settings.animalAcidDamage);
                  }
 else                   if (Settings.damageChickens) {
                    ((Animals)current).damage(Settings.animalAcidDamage);
                  }
                }
              }
            }
          }
        }
,0L,20L);
      }
    }
  }
);
}

Fixed version (ground truth):
@Override public void onEnable(){
  plugin=this;
  Class<?> clazz;
  try {
    clazz=Class.forName("String_Node_Str");
  }
 catch (  Exception e) {
    clazz=null;
  }
  if (clazz != null) {
    onePointEight=true;
  }
  saveDefaultConfig();
  if (getConfig().getInt("String_Node_Str",-1) < 1) {
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    getLogger().severe("String_Node_Str");
    if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
    }
 else {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.DISTANCE));
    }
    return;
  }
  if (!loadPluginConfig()) {
    if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
    }
 else {
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
      getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.WORLD_NAME));
    }
    return;
  }
  if (Settings.useEconomy && !VaultHelper.setupEconomy()) {
    getLogger().warning("String_Node_Str");
    Settings.useEconomy=false;
  }
  if (!VaultHelper.setupPermissions()) {
    getLogger().severe("String_Node_Str");
    getServer().getPluginManager().disablePlugin(this);
    return;
  }
  challenges=new Challenges(this);
  playersFolder=new File(getDataFolder() + File.separator + "String_Node_Str");
  if (!playersFolder.exists()) {
    playersFolder.mkdir();
  }
  players=new PlayerCache(this);
  islandCmd=new IslandCmd(this);
  if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
    AdminCmd adminCmd=new AdminCmd(this);
    getCommand("String_Node_Str").setExecutor(islandCmd);
    getCommand("String_Node_Str").setTabCompleter(islandCmd);
    getCommand("String_Node_Str").setExecutor(getChallenges());
    getCommand("String_Node_Str").setTabCompleter(getChallenges());
    getCommand("String_Node_Str").setExecutor(adminCmd);
    getCommand("String_Node_Str").setTabCompleter(adminCmd);
  }
 else {
    AdminCmd adminCmd=new AdminCmd(this);
    getCommand("String_Node_Str").setExecutor(islandCmd);
    getCommand("String_Node_Str").setTabCompleter(islandCmd);
    getCommand("String_Node_Str").setExecutor(getChallenges());
    getCommand("String_Node_Str").setTabCompleter(getChallenges());
    getCommand("String_Node_Str").setExecutor(adminCmd);
    getCommand("String_Node_Str").setTabCompleter(adminCmd);
  }
  messages=new Messages(this);
  messages.loadMessages();
  registerEvents();
  try {
    final Metrics metrics=new Metrics(this);
    metrics.start();
  }
 catch (  final IOException localIOException) {
  }
  getServer().getScheduler().runTask(this,new Runnable(){
    @Override public void run(){
      getIslandWorld();
      if (Bukkit.getServer().getPluginManager().isPluginEnabled("String_Node_Str")) {
        getServer().getPluginManager().registerEvents(new HeroChatListener(plugin),plugin);
      }
      if (getServer().getWorld(Settings.worldName).getGenerator() == null) {
        getLogger().severe("String_Node_Str" + plugin.getName() + "String_Node_Str");
        getLogger().severe("String_Node_Str");
        getLogger().severe("String_Node_Str");
        getLogger().severe("String_Node_Str");
        getLogger().severe("String_Node_Str" + Settings.worldName + "String_Node_Str");
        getLogger().severe("String_Node_Str" + plugin.getName());
        if (Settings.GAMETYPE.equals(Settings.GameType.ASKYBLOCK)) {
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
        }
 else {
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
          getCommand("String_Node_Str").setExecutor(new NotSetup(Reason.GENERATOR));
        }
        return;
      }
      getServer().getScheduler().runTask(plugin,new Runnable(){
        @Override public void run(){
          if (grid == null) {
            grid=new GridManager(plugin);
          }
          getWarpSignsListener().loadWarpList();
          if (Settings.useWarpPanel) {
            warpPanel=new WarpPanel(plugin);
            getServer().getPluginManager().registerEvents(warpPanel,plugin);
          }
          getServer().getPluginManager().registerEvents(new ControlPanel(plugin),plugin);
          settingsPanel=new SettingsPanel(plugin);
          getServer().getPluginManager().registerEvents(settingsPanel,plugin);
          biomes=new BiomesPanel(plugin);
          getServer().getPluginManager().registerEvents(biomes,plugin);
          TopTen.topTenLoad();
          if (tinyDB == null) {
            tinyDB=new TinyDB(plugin);
          }
          for (          Player onlinePlayer : plugin.getServer().getOnlinePlayers()) {
            tinyDB.savePlayerName(onlinePlayer.getName(),onlinePlayer.getUniqueId());
          }
          getServer().getScheduler().runTaskTimer(plugin,new Runnable(){
            @Override public void run(){
              getGrid().saveGrid();
            }
          }
,Settings.backupDuration,Settings.backupDuration);
          getLogger().info("String_Node_Str");
        }
      }
);
      if (Settings.updateCheck) {
        checkUpdates();
        new BukkitRunnable(){
          int count=0;
          @Override public void run(){
            if (count++ > 10) {
              plugin.getLogger().info("String_Node_Str");
              this.cancel();
            }
 else {
              if (updateCheck != null) {
                if (updateCheck.isSuccess()) {
                  checkUpdatesNotify(null);
                }
 else {
                  plugin.getLogger().info("String_Node_Str");
                }
                this.cancel();
              }
            }
          }
        }
.runTaskTimer(plugin,0L,20L);
      }
      if (Settings.mobAcidDamage > 0D || Settings.animalAcidDamage > 0D) {
        getServer().getScheduler().scheduleSyncRepeatingTask(plugin,new Runnable(){
          @Override public void run(){
            List<Entity> entList=islandWorld.getEntities();
            for (            Entity current : entList) {
              if (plugin.isOnePointEight() && current instanceof Guardian) {
                continue;
              }
              if ((current instanceof Monster) && Settings.mobAcidDamage > 0D) {
                if ((current.getLocation().getBlock().getType() == Material.WATER) || (current.getLocation().getBlock().getType() == Material.STATIONARY_WATER)) {
                  ((Monster)current).damage(Settings.mobAcidDamage);
                }
              }
 else               if ((current instanceof Animals) && Settings.animalAcidDamage > 0D) {
                if ((current.getLocation().getBlock().getType() == Material.WATER) || (current.getLocation().getBlock().getType() == Material.STATIONARY_WATER)) {
                  if (!current.getType().equals(EntityType.CHICKEN)) {
                    ((Animals)current).damage(Settings.animalAcidDamage);
                  }
 else                   if (Settings.damageChickens) {
                    ((Animals)current).damage(Settings.animalAcidDamage);
                  }
                }
              }
            }
          }
        }
,0L,20L);
      }
    }
  }
);
}