[Opserty]

Try running this in a plugin like global_start or forumhome_start:

PHP Code:

$vbulletin->datastore->do_db_fetch("'mystuff'");  
var_dump($vbulletin->mystuff);
echo '-------------------------------------------------';
$dataitems = $db->query_first("
            SELECT *
            FROM " . TABLE_PREFIX . "datastore
            WHERE title = 'mystuff'
        ");
var_dump($dataitems); 


What do you get outputted? (near the top of the page, view the source to get the proper formatting)