Model mysteriously not saving

Hi all,

My model is refusing to save, not sure why. No error or exception gets generated. The database never sees an INSERT query either.

Model definition:

namespace Model;

class Log extends \Phalcon\Mvc\Model{

    public function beforeCreate(){
        $this->date_entered = date('Y-m-d G:i:s');
        exit('beforeCreate');
    }

    public function beforeSave(){
        exit('beforeSave');
    }
}

Table definition

Calling code

$Log             = new Log();
$Log->barcode    = 111;
$Log->meal       = 'test';
$Log->date       = date('2013-01-01 00:00:)0');
$Log->username   = 'blah';
$Log->first_name = 'Blah';
$Log->last_name  = 'McBlah';
$Log->save();