Item (Mage_Catalog_Model_Product) with the same id "91" already exist

#0 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php(265): Varien_Data_Collection->addItem(Object(Mage_Catalog_Model_Product))
#1 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php(1055): Mage_Eav_Model_Entity_Collection_Abstract->addItem(Object(Mage_Catalog_Model_Product))
#2 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php(871): Mage_Eav_Model_Entity_Collection_Abstract->_loadEntities(false, false)
#3 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Review/Model/Observer.php(78): Mage_Eav_Model_Entity_Collection_Abstract->load()
#4 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Model/App.php(1339): Mage_Review_Model_Observer->catalogBlockProductCollectionBeforeToHtml(Object(Varien_Event_Observer))
#5 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Model/App.php(1312): Mage_Core_Model_App->_callObserverMethod(Object(Mage_Review_Model_Observer), 'catalogBlockPro...', Object(Varien_Event_Observer))
#6 /web/apps/scooterazzi.co.nz/htdocs/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('catalog_block_p...', Array)
#7 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Catalog/Block/Product/List.php(164): Mage::dispatchEvent('catalog_block_p...', Array)
#8 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(918): Mage_Catalog_Block_Product_List->_beforeToHtml()
#9 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#10 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('product_list', true)
#11 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Catalog/Block/Category/View.php(90): Mage_Core_Block_Abstract->getChildHtml('product_list')
#12 /web/apps/scooterazzi.co.nz/htdocs/app/design/frontend/default/ma_lepus/template/catalog/category/view.phtml(71): Mage_Catalog_Block_Category_View->getProductListHtml()
#13 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Template.php(241): include('/web/apps/scoot...')
#14 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...')
#15 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#16 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#17 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#18 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
#19 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#20 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#21 /web/apps/scooterazzi.co.nz/htdocs/app/design/frontend/default/ma_lepus/template/page/2columns-right.phtml(53): Mage_Core_Block_Abstract->getChildHtml('content')
#22 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Template.php(241): include('/web/apps/scoot...')
#23 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...')
#24 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#25 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#26 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#27 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#28 /web/apps/scooterazzi.co.nz/htdocs/app/code/community/MVentory/Productivity/controllers/CategoryController.php(225): Mage_Core_Controller_Varien_Action->renderLayout()
#29 /web/apps/scooterazzi.co.nz/htdocs/app/code/community/MVentory/Productivity/controllers/CategoryController.php(85): MVentory_Productivity_CategoryController->_viewAction(NULL)
#30 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(418): MVentory_Productivity_CategoryController->viewAction()
#31 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view')
#32 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#33 /web/apps/scooterazzi.co.nz/htdocs/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#34 /web/apps/scooterazzi.co.nz/htdocs/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#35 /web/apps/scooterazzi.co.nz/htdocs/index.php(87): Mage::run('', 'store')
#36 {main}