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#0 /var/www/html/magento/app/design/frontend/act/default/template/catalog/product/compare/list.phtml(7): mageCoreErrorHandler(8, 'Undefined index...', '/var/www/html/m...', 7, Array)
#1 /var/www/html/magento/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/html/m...')
#2 /var/www/html/magento/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/act/de...')
#3 /var/www/html/magento/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#4 /var/www/html/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#5 /var/www/html/magento/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#6 /var/www/html/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
#7 /var/www/html/magento/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#8 /var/www/html/magento/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#9 /var/www/html/magento/app/design/frontend/act/default/template/page/3columns.phtml(23): Mage_Core_Block_Abstract->getChildHtml('content')
#10 /var/www/html/magento/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/html/m...')
#11 /var/www/html/magento/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/act/de...')
#12 /var/www/html/magento/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#13 /var/www/html/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#14 /var/www/html/magento/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#15 /var/www/html/magento/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#16 /var/www/html/magento/app/code/core/Mage/Catalog/controllers/Product/CompareController.php(69): Mage_Core_Controller_Varien_Action->renderLayout()
#17 /var/www/html/magento/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_Product_CompareController->indexAction()
#18 /var/www/html/magento/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('index')
#19 /var/www/html/magento/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#20 /var/www/html/magento/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#21 /var/www/html/magento/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#22 /var/www/html/magento/index.php(87): Mage::run('', 'store')
#23 {main}