Построение индекса таблиц VirtueMart - [VM1] Общие вопросы и ошибки

CREATE INDEX ***_vm_product ON ***_vm_product (product_id, product_sku(8), product_s_desc(15), product_name(15)) 

CREATE INDEX jos_vm_category ON jos_vm_category (category_id, category_name(15))
CREATE INDEX jos_vm_category_xref ON jos_vm_category_xref (category_parent_id, category_child_id, category_list)

/* Do the subscription check */
require_once (JPATH_COMPONENT.DS.'helpers'.DS.'subscription_check.php');
$check = new SubscriptionCheck;
$result = $check->CheckKey($hostname);

/* Print out the results */
if ($result['errorcode'] > 0 ) {
	if (JRequest::getBool('cron')) echo $result['result'];
	else $mainframe->enqueueMessage($result['result'], 'error');
}