I am using magento 18.104.22.168 it works all fine but when i go to Sales -> Order i get following error
Fatal error: Call to undefined method Mage_Sales_Model_Mysql4_Order_Collection::addExpressionAttributeToSelect() in
I am getting another error here in Catalog -> Google Sitemap
Fatal error: Call to a member function getCollection() on a non-object in ...
I have tried every possible thing to get it resolved searched on google etc but no luck.