Ya encontre la parte donde salen todos los mensajes de validacion, de acuerdo a la que se este usando, por ejemplo para la validacion de email seria esta:
Código PHP:
Ver originalprotected $_messageTemplates = array( self::INVALID => "Invalid type given. String expected",
self::INVALID_FORMAT => "'%value%' is no valid email address in the basic format local-part@hostname",
self::INVALID_HOSTNAME => "'%hostname%' is no valid hostname for email address '%value%'",
self::INVALID_MX_RECORD => "'%hostname%' does not appear to have a valid MX record for the email address '%value%'",
self::INVALID_SEGMENT => "'%hostname%' is not in a routable network segment. The email address '%value%' should not be resolved from public network",
self::DOT_ATOM => "'%localPart%' can not be matched against dot-atom format",
self::QUOTED_STRING => "'%localPart%' can not be matched against quoted-string format",
self::INVALID_LOCAL_PART => "'%localPart%' is no valid local part for email address '%value%'",
self::LENGTH_EXCEEDED => "'%value%' exceeds the allowed length",
);
Pero sucede que estoes mensajes no se dejan editar, es decir no puedo traducirlos ni modificarlos.
Espero me puedan ayudar.
Saludos.