Fatal error need help??

[M.Iftikhar]

hello,
i need some help when i access my View Forum Leaders the flowing error is displayed........

Fatal error: Call to undefined method vb_optimise_db::escape_string() in /home/******/public_html/includes/class_core.php on line 1635

the line 1635 code is
$item = "'" . $this->dbobject->escape_string($item) . "'"; please tell me what is the problem i recently updated to 4.1.5..
when i disabled vB Optimise it work fine can i install vB Optimise again or something different....thanks and reply me soon

--------------- Added 1312167186 at 1312167186 ---------------

please some one help me.........please reply me

[Post Reader]

try re-uploading all files of vboptimise or re-uploading the classcore.php file

[Brandon Sheley]

please tell me what is the problem i recently updated to 4.1.5..
when i disabled vB Optimise it work fine can i install vB Optimise again or something different....thanks and reply me soon
You need to ask in the release thread if it's an issue with a 3rd party add-on..