Program: 187703
Project: 187703
Buggy source:
private void SendDeathMessage(EntityDeathEvent event){
  Wolves wolf=null;
  String Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
  for (  Wolves w : ConfigBuffer.mWolves.values()) {
    if (w.getID() == event.getEntity().getEntityId()) {
      wolf=w;
    }
  }
  if (wolf != null) {
    if (event.getEntity().getLastDamageCause() instanceof EntityDamageByProjectileEvent) {
      EntityDamageByProjectileEvent e=(EntityDamageByProjectileEvent)event.getEntity().getLastDamageCause();
      if (event.getEntity().getLastDamageCause() instanceof Player) {
        if (((Player)e.getDamager()) == wolf.getOwner()) {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
        }
 else {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",((Player)e.getDamager()).getName());
        }
      }
 else       if (event.getEntity().getLastDamageCause() instanceof Skeleton) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (event.getEntity().getLastDamageCause() instanceof Ghast) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
    }
 else     if (event.getEntity().getLastDamageCause() instanceof EntityDamageByEntityEvent) {
      EntityDamageByEntityEvent e=(EntityDamageByEntityEvent)event.getEntity().getLastDamageCause();
      if (e.getDamager() instanceof Player) {
        if (((Player)e.getDamager()) == wolf.getOwner()) {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
        }
 else {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",((Player)e.getDamager()).getName());
        }
      }
 else       if (e.getDamager() instanceof Zombie) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Creeper) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Spider) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Slime) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Giant) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Wolf) {
        Wolf w=(Wolf)e.getDamager();
        if (w.isTamed() == true) {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",((CraftWolf)w).getHandle().getOwnerName());
          ;
          Killer="String_Node_Str" + ((Player)w.getOwner()).getName();
          for (          String owner : ConfigBuffer.mWolves.keySet()) {
            if (ConfigBuffer.mWolves.get(owner).getID() == w.getEntityId()) {
            }
          }
        }
 else {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
        }
      }
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.BLOCK_EXPLOSION)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.DROWNING)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.FALL)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.FIRE)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.LAVA)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.LIGHTNING)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.VOID)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
    wolf.getOwner().sendMessage(MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",wolf.Name) + Killer);
  }
}

Fixed version (ground truth):
private void SendDeathMessage(final EntityDeathEvent event){
  Wolves wolf=null;
  String Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
  for (  Wolves w : ConfigBuffer.mWolves.values()) {
    if (w.getID() == event.getEntity().getEntityId()) {
      wolf=w;
    }
  }
  if (wolf != null) {
    if (event.getEntity().getLastDamageCause() instanceof EntityDamageByProjectileEvent) {
      EntityDamageByProjectileEvent e=(EntityDamageByProjectileEvent)event.getEntity().getLastDamageCause();
      if (event.getEntity().getLastDamageCause() instanceof Player) {
        if (((Player)e.getDamager()) == wolf.getOwner()) {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
        }
 else {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",((Player)e.getDamager()).getName());
        }
      }
 else       if (event.getEntity().getLastDamageCause() instanceof Skeleton) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (event.getEntity().getLastDamageCause() instanceof Ghast) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
    }
 else     if (event.getEntity().getLastDamageCause() instanceof EntityDamageByEntityEvent) {
      EntityDamageByEntityEvent e=(EntityDamageByEntityEvent)event.getEntity().getLastDamageCause();
      if (e.getDamager() instanceof Player) {
        if (((Player)e.getDamager()) == wolf.getOwner()) {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
        }
 else {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",((Player)e.getDamager()).getName());
        }
      }
 else       if (e.getDamager() instanceof Zombie) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Creeper) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Spider) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Slime) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Giant) {
        Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
      }
 else       if (e.getDamager() instanceof Wolf) {
        Wolf w=(Wolf)e.getDamager();
        if (w.isTamed() == true) {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",((CraftWolf)w).getHandle().getOwnerName());
          ;
          Killer="String_Node_Str" + ((Player)w.getOwner()).getName();
          for (          String owner : ConfigBuffer.mWolves.keySet()) {
            if (ConfigBuffer.mWolves.get(owner).getID() == w.getEntityId()) {
            }
          }
        }
 else {
          Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
        }
      }
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.BLOCK_EXPLOSION)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.DROWNING)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.FALL)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.FIRE)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.LAVA)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.LIGHTNING)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
 else     if (event.getEntity().getLastDamageCause().getCause().equals(DamageCause.VOID)) {
      Killer=MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str"));
    }
    wolf.getOwner().sendMessage(MyWolfUtil.SetColors(MyWolfLanguage.getString("String_Node_Str")).replace("String_Node_Str",wolf.Name) + Killer);
  }
}