Fatal error: undefined method

[ganeshkumar33]

Please guide me about below error?. Thanks

Fatal error: Call to undefined method Mage_Sales_Model_Resource_Order_Status_Collection::addStatusFilter() in /var/www/vhosts/dev.houseofwatches.co.uk/httpdocs/app/code/local/C3/V12Finance/Helper/StatusUpdate.php on line 20

[Magician_Dhara]

Please elaborate about your recent activity on the site. Have you installed the extension into system?