[split] on-existence :datagrid

hello all,

may you can help me?
i have problem with my code igniter when i see on browser, the error message is : non-existence :datagrid, other wise, i already have it on application\libraries\datagrid.php. there's a problem -==-=-=-====>> class datagrid { and function datagrid(){}; please help me.

regards,
yuki.