Class 'Mage_Googlecheckout_Helper_Data' not found

Question

We\'ve just upgraded from Magento version 1.8.0.0 to 1.8.1.0 and now when we go to the configuration section of our site we receive the message:

Fatal error: Cla         


        

Answer 1

I agree the solution above works. However, I got this error myself after upgrading from Magento 1.7 to 1.8 simply by copying all the new files over the old Magento 1.7 filesystem. I fixed this (and perhaps other bugs waiting) by removing all contents of the app/code/core folder and copying all files from the fresh Magento 1.8 folder app/code/core/* (Mage and Zend) to the now empty folder. Same thing, different approach.