After a regular upgrade from 1.1.7 to 1.1.8 via Magento Connect
I have the following issue, and i doesn`t have a clue how to fix it.
After a search it seems that nobody else had this one.
The frontpage is working, but when it comes to the product i get this one:
Fatal error: Class 'Mage_Tax_Helper_Data' not found in /homepages/12/d123875199/htdocs/magento/app/code/core/Mage/Core/Model/App.php on line 816
When it comes to the admin:
Fatal error: Class 'Mage_Tag_Helper_Data' not found in /homepages12/d123875199/htdocs/magento/app/code/core/Mage/Core/Model/App.php on line 816
Regards from Germany,