Load_file in mysql

[youp]

i have a trouble with this script :

<?php


$dbh=mysql_connect ("localhost", "xxxxx", "xxxxx") or die ("I cannot connect to the database because: " . mysql_error());
mysql_select_db ("xxxxx");

$query = "INSERT INTO Files (Name,Class,Size,Date,Lang,Title,Bytes) VALUES
('start.bmp','','303056','2007-01-28 12:40:31','','Start Screen', LOAD_FILE( '/etc/fstab' ))";

$result = mysql_query($query);

if (!$result) {
die('Invalid query: ' . mysql_error());
}

?>


->

: php index.php

X-Powered-By: PHP/5.1.6
Content-type: text/html

Invalid query: Column 'Bytes' cannot be null


i use mysql 5.0.24...

i don't understand, is probably a bug ?

thanks

[youp]

structure of table mysql ->

--
-- Table structure for table `Files`
--

CREATE TABLE `Files` (
`id` int(11) NOT NULL auto_increment,
`Name` varchar(255) NOT NULL,
`Class` varchar(255) NOT NULL,
`Size` varchar(255) NOT NULL,
`Date` datetime NOT NULL,
`Lang` varchar(2) NOT NULL,
`Title` varchar(255) NOT NULL,
`Bytes` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=15 ;