Error al crear Base de Datos en mySQL

[scandon00]

CREATE TABLE `ajusteinv` (
`NoRef` bigint(20) NOT NULL default '0',
`CompanyID` smallint(6) NOT NULL default '0',
`SubCompanyID` smallint(6) NOT NULL default '0',
`Fecha` date NOT NULL default '0000-00-00',
`Usuario` varchar(15) NOT NULL default '',
`Nota` mediumtext NOT NULL,
`Procesado` binary(1) NOT NULL default '',
`FechaGrabado` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1;