I am stuck in a situation where I can't edit/create any new customers using the backend in magento.

The requirement was simple: Create some customer attributes, so I installed this extension to do the job.

It seems to add the attributes that I created using the customer attributes section from the backend but after that I can't access the customers section from the backend. Everytime I try it gives me this error Fatal error: Call to a member function addCustomerIdFilter() on a non-object in xxxxx\app\code\core\Mage\Adminhtml\Block\Customer\Edit\Tab\View\Accordion.php on line 74

I tried everything including un-installing the extension but it doesn't help. Please can anyone guide me how to solve this?

2 Answers 2


Okay, I solved it.

The problem arises if you have disabled the Wishlist functionality in your store. It seems like Magento didn't implemented a check to find whether Wishlist is enabled or not in the file Mage_Adminhtml_Block_Customer_Edit_Tab_View_Accordion. So enabling the wishlist fixed the problem.

Although its a drag to keep the wishlist module active even though I don't need it.

  • 1
    Happy that it works! But magento team should have done a check whether Wishlist is active or not. If it helps you... I wrapped the section inside an IF tag to check if wishlist is enabled.
    – Tarun
    Jan 16, 2015 at 14:22

Complementing the above answer, just add an override on a new or current module: In the config.xml


And add a new class overriding the block with a little validation:

class Yournamespace_Customer_Block_Adminhtml_Customer_Edit_Tab_View_Accordion extends Mage_Adminhtml_Block_Customer_Edit_Tab_View_Accordion
    protected function _prepareLayout()
        $customer = Mage::registry('current_customer');


        $this->addItem('lastOrders', array(
            'title'       => Mage::helper('customer')->__('Recent Orders'),
            'ajax'        => true,
            'content_url' => $this->getUrl('*/*/lastOrders', array('_current' => true)),

        // add shopping cart block of each website
        foreach (Mage::registry('current_customer')->getSharedWebsiteIds() as $websiteId) {
            $website = Mage::app()->getWebsite($websiteId);

            // count cart items
            $cartItemsCount = Mage::getModel('sales/quote')
                ->addFieldToFilter('parent_item_id', array('null' => true))
            // prepare title for cart
            $title = Mage::helper('customer')->__('Shopping Cart - %d item(s)', $cartItemsCount);
            if (count($customer->getSharedWebsiteIds()) > 1) {
                $title = Mage::helper('customer')->__('Shopping Cart of %1$s - %2$d item(s)', $website->getName(), $cartItemsCount);

            // add cart ajax accordion
            $this->addItem('shopingCart' . $websiteId, array(
                'title'   => $title,
                'ajax'    => true,
                'content_url' => $this->getUrl('*/*/viewCart', array('_current' => true, 'website_id' => $websiteId)),

        // count wishlist items
        if (Mage::helper('core')->isModuleEnabled('wishlist')) {
            $wishlistCount = Mage::getModel('wishlist/item')->getCollection()
            // add wishlist ajax accordion
            $this->addItem('wishlist', array(
                'title' => Mage::helper('customer')->__('Wishlist - %d item(s)', $wishlistCount),
                'ajax'  => true,
                'content_url' => $this->getUrl('*/*/viewWishlist', array('_current' => true)),



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