Magento system.log 'Warning: SimpleXMLElement' - (adminNotification/Model/Feed.php) resulting in error 404 on backend

Question

Hey guys I got following error:

Warning: SimpleXMLElement::__construct(): in app/code/core/Mage/AdminNotification/Model/Feed.php on line 173

which prevents me from literally everything on the backend because everytime I want to edit a product or an order I get an error 404 message (Still can access the backend).

Now I already tried to google it Magento system.log 'Warning: SimpleXMLElement' - (adminNotification/Model/Feed.php) and people suggest that I had to turn off modules containing Mage_AdminNotification_Model_Feed or "AdminNotification". I literally deleted all the files of the modules which contains these words and deleted the modules from my module folder and I still get this error....

I also loaded a Backup where everything was fine and I STILL get this error... What can I do to fix this or maybe I'm doing it wrong?

The only path/modules I didn't deleted are these:

includes\src\Mage_AdminNotification_Model_Feed.php,
includes\src\Mage_AdminNotification_Model_Observer.php,
includes\src\MSP_Common_Model_Feed.php

Answer 1

It looks like something is breaking the adminhtml feed module.

The cause could be a third-party module that is retrieving invalid XML.

Check whether your site code contains any class which extends Mage_AdminNotification_Model_Feed.

Once you find it:

Try to disable that module (in app/etc/modules/). Clean the system.log. See if the error is gone. Repeat this process for each module.

Answer 2

This below files are stored in the compilation folder

includes\src\Mage_AdminNotification_Model_Feed.php, includes\src\Mage_AdminNotification_Model_Observer.php, includes\src\MSP_Common_Model_Feed.php

So first navigate to <magento-root>\includes\config.php and comment both below lines in this config.php file.

#define('COMPILER_INCLUDE_PATH', dirname(__FILE__).DIRECTORY_SEPARATOR.'src');
#define('COMPILER_COLLECT_PATH', dirname(__FILE__).DIRECTORY_SEPARATOR.'stat');

Than after clear the cache and again do the compile form the admin.