Program: 187585
Project: 187585
Buggy source:
public boolean onCommand(CommandSender sender,Command command,String label,String[] args){
  if (sender instanceof Player) {
    Player player=(Player)sender;
    if (args.length == 0) {
      if (MyPetList.hasMyPet(player)) {
        MyPet myPet=MyPetList.getMyPet(player);
        if (myPet.status == PetState.Despawned) {
          sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")).replace("String_Node_Str",myPet.petName));
          return true;
        }
        if (myPet.status == PetState.Dead) {
          sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")).replace("String_Node_Str",myPet.petName).replace("String_Node_Str","String_Node_Str" + myPet.respawnTime));
          return true;
        }
        if (player.getGameMode() == GameMode.CREATIVE && !MyPetPermissions.has(player,"String_Node_Str")) {
          sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")).replace("String_Node_Str",myPet.petName));
          return true;
        }
        if (myPet.getSkills().hasSkill("String_Node_Str")) {
          myPet.getSkills().getSkill("String_Node_Str").activate();
        }
      }
 else {
        sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")));
      }
    }
 else     if (args.length == 1 && MyPetPermissions.has(player,"String_Node_Str")) {
      if (MyPetList.hasMyPet(args[0])) {
        MyPet myPet=MyPetList.getMyPet(args[0]);
        if (myPet.getSkills().isSkillActive("String_Node_Str")) {
          ((Inventory)myPet.getSkills().getSkill("String_Node_Str")).OpenInventory(player);
        }
      }
    }
  }
  return true;
}

Fixed version (ground truth):
public boolean onCommand(CommandSender sender,Command command,String label,String[] args){
  if (sender instanceof Player) {
    Player player=(Player)sender;
    if (args.length == 0) {
      if (MyPetList.hasMyPet(player)) {
        MyPet myPet=MyPetList.getMyPet(player);
        if (myPet.status == PetState.Despawned) {
          sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")).replace("String_Node_Str",myPet.petName));
          return true;
        }
        if (myPet.status == PetState.Dead) {
          sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")).replace("String_Node_Str",myPet.petName).replace("String_Node_Str","String_Node_Str" + myPet.respawnTime));
          return true;
        }
        if (player.getGameMode() == GameMode.CREATIVE && !MyPetPermissions.has(player,"String_Node_Str")) {
          sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")).replace("String_Node_Str",myPet.petName));
          return true;
        }
        if (!MyPetPermissions.hasExtended(player,"String_Node_Str")) {
          myPet.sendMessageToOwner(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")));
          return true;
        }
        if (myPet.getSkills().hasSkill("String_Node_Str")) {
          myPet.getSkills().getSkill("String_Node_Str").activate();
        }
      }
 else {
        sender.sendMessage(MyPetUtil.setColors(MyPetLanguage.getString("String_Node_Str")));
      }
    }
 else     if (args.length == 1 && MyPetPermissions.has(player,"String_Node_Str")) {
      if (MyPetList.hasMyPet(args[0])) {
        MyPet myPet=MyPetList.getMyPet(args[0]);
        if (myPet.getSkills().isSkillActive("String_Node_Str")) {
          ((Inventory)myPet.getSkills().getSkill("String_Node_Str")).OpenInventory(player);
        }
      }
    }
  }
  return true;
}