Busaca void CAttack::DamageSprite(LPOBJ lpObj,int damage) // OK

//--Buscan esto
else if(lpItem->m_Index == GET_ITEM(13,123)) // Skeleton
{
   lpItem->m_Durability -= (damage*(1.0f*DurabilityValue))/100;
}

y pegan esto
else if (gCustomPet.CheckCustomPetByItem(lpItem->m_Index) != 0) // CustomPets
{
   if (gCustomPet.CheckCustomPetIsImortal(lpItem->m_Index) == 0)
   {
      lpItem->m_Durability = lpItem->m_Durability;
   }
   else
   {
      lpItem->m_Durability -= (damage * (3.0f * DurabilityValue)) / 100;
   }
}