I'm having problems with my Magento website.
I first noticed we had a problem when I went to: "System/Configuration/General/Design" I got the following error message:
"Fatal error: Class 'Mage_Core_Helper_UnserializeArray' not found in /home/devastraantiques/public_html/app/Mage.php on line 547"
I've since discovered that I can't Edit or even Add a product, as I now get the following error message:
Fatal error: Call to a member function getUploaderConfig() on a non-object in /home/devastraantiques/public_html/includes/src/Mage_Adminhtml_Block_Catalog_Product_Helper_Form_Gallery_Content.php on line 56"
I've been through Forums, tried numerous different things, but nothing has helped. The only thing that changed on my site was a Security Patch. I'm currently using Magento CE - 220.127.116.11
Can anyone help? I'm at a loss of what to do.