Call to undefined method Mage_Core_Model_Config::cleanCache app/code/core/Mage/Core/Model/App.php on line 1088
Call to undefined method Mage_Core_Model_Config::cleanCache app/code/core/Mage/Core/Model/App.php on line 1088 If you have a very old version of magento and/or you have lost files or you've updated only the library this error can happen (as happened to me). Add this code /** * Configuration cache clean process * * @return Mage_Core_Model_Config */ public function cleanCache() { return $this->reinit(); } in app/code/core/Mage/Core/Model/Config.php. after the function reinit() - around line 600 in magento 1.3.1 References http://phpcrossref.com/xref/magento/app/code/core/Mage/Core/Model/Config.php.html#cleancache