Item (Mage_Catalog_Model_Product) with the same id "6854" already exist

#0 /home/florablom/domains/florablom.com/public_html/includes/src/__catalog.php(6988): Varien_Data_Collection->addItem(Object(Mage_Catalog_Model_Product))
#1 /home/florablom/domains/florablom.com/public_html/includes/src/AdjustWare_Upsell_Model_Upsell.php(51): Mage_Eav_Model_Entity_Collection_Abstract->addItem(Object(Mage_Catalog_Model_Product))
#2 /home/florablom/domains/florablom.com/public_html/includes/src/AdjustWare_Upsell_Block_Rewrite_FrontCatalogProductListUpsell.php(33): AdjustWare_Upsell_Model_Upsell->getPreparedCollection('UpSell', Object(Mage_Catalog_Model_Product))
#3 /home/florablom/domains/florablom.com/public_html/includes/src/Mage_Catalog_Block_Product_List_Upsell.php(94): AdjustWare_Upsell_Block_Rewrite_FrontCatalogProductListUpsell->_prepareData()
#4 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2692): Mage_Catalog_Block_Product_List_Upsell->_beforeToHtml()
#5 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2411): Mage_Core_Block_Abstract->toHtml()
#6 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2355): Mage_Core_Block_Abstract->_getChildHtml('upsell_products', true)
#7 /home/florablom/domains/florablom.com/public_html/app/design/frontend/rwd/florablom/template/catalog/product/view.phtml(222): Mage_Core_Block_Abstract->getChildHtml('upsell_products')
#8 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(3530): include('/home/florablom...')
#9 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(3561): Mage_Core_Block_Template->fetchView('frontend/rwd/fl...')
#10 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(3575): Mage_Core_Block_Template->renderView()
#11 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2693): Mage_Core_Block_Template->_toHtml()
#12 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(14173): Mage_Core_Block_Abstract->toHtml()
#13 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2693): Mage_Core_Block_Text_List->_toHtml()
#14 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2411): Mage_Core_Block_Abstract->toHtml()
#15 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(2355): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#16 /home/florablom/domains/florablom.com/public_html/includes/src/Bubble_Search_Model_Observer.php(84): Mage_Core_Block_Abstract->getChildHtml('content')
#17 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(22656): Bubble_Search_Model_Observer->beforeRenderLayout(Object(Varien_Event_Observer))
#18 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(22635): Mage_Core_Model_App->_callObserverMethod(Object(Bubble_Search_Model_Observer), 'beforeRenderLay...', Object(Varien_Event_Observer))
#19 /home/florablom/domains/florablom.com/public_html/app/Mage.php(459): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array)
#20 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(14560): Mage::dispatchEvent('controller_acti...')
#21 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(11917): Mage_Core_Controller_Varien_Action->renderLayout()
#22 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(11832): Mage_Cms_Helper_Page->_renderPage(Object(Mage_Cms_IndexController), 'no-route')
#23 /home/florablom/domains/florablom.com/public_html/app/code/core/Mage/Cms/controllers/IndexController.php(75): Mage_Cms_Helper_Page->renderPage(Object(Mage_Cms_IndexController), 'no-route')
#24 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(14594): Mage_Cms_IndexController->noRouteAction()
#25 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(19080): Mage_Core_Controller_Varien_Action->dispatch('noRoute')
#26 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(18610): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#27 /home/florablom/domains/florablom.com/public_html/includes/src/__default.php(21663): Mage_Core_Controller_Varien_Front->dispatch()
#28 /home/florablom/domains/florablom.com/public_html/app/Mage.php(694): Mage_Core_Model_App->run(Array)
#29 /home/florablom/domains/florablom.com/public_html/index.php(84): Mage::run('', 'store')
#30 {main}