Overnight Mountings

Fatal error: Uncaught Error: Class 'Mage_Pricecalculation_Helper_Customgallery' not found in /var/www/overnightlive/app/Mage.php:550 Stack trace: #0 /var/www/overnightlive/app/design/frontend/default/shopper/template/catalog/product/view/media.phtml(167): Mage::helper('pricecalculatio...') #1 /var/www/overnightlive/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/overni...') #2 /var/www/overnightlive/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...') #3 /var/www/overnightlive/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView() #4 /var/www/overnightlive/app/code/core/Mage/Core/Block/Abstract.php(923): Mage_Core_Block_Template->_toHtml() #5 /var/www/overnightlive/app/code/core/Mage/Core/Block/Abstract.php(641): Mage_Core_Block_Abstract->toHtml() #6 /var/www/overnightlive/app/code/core/Mage/Core/Block/Abstract.php(585): Mage_Core_Block_Abstract->_getChildHtml('media', true) #7 /var/www/overnightlive/app/design/fronte in /var/www/overnightlive/app/Mage.php on line 550