Fatal error: Mage_Core_Model_Session_Abstract::getMessages(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "Mage_Core_Model_Message_Collection" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in /home/alphabicicletas/www/app/code/core/Mage/Core/Model/Session/Abstract.php on line 222