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