erro mercadolivre_adminhtml_category_index

gistfile1.txt

Recoverable Error: Object of class Mage_Core_Model_Store could not be converted to string  in /var/www/mercadolivre/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 2707

#0 /var/www/mercadolivre/lib/Varien/Db/Adapter/Pdo/Mysql.php(2707): mageCoreErrorHandler(4096, 'Object of class...', '/var/www/mercad...', 2707, Array)
#1 /var/www/mercadolivre/lib/Varien/Data/Collection/Db.php(483): Varien_Db_Adapter_Pdo_Mysql->prepareSqlCondition('category.store_...', Object(Mage_Core_Model_Store))
#2 /var/www/mercadolivre/app/code/local/Acaldeira/Mercadolivre/Model/Mysql4/Category/Collection.php(14): Varien_Data_Collection_Db->_getConditionSql('category.store_...', Object(Mage_Core_Model_Store))
#3 /var/www/mercadolivre/app/code/local/Acaldeira/Mercadolivre/Block/Adminhtml/Category/Grid.php(24): Acaldeira_Mercadolivre_Model_Mysql4_Category_Collection->addFieldToFilter('category.store_...', Object(Mage_Core_Model_Store))
#4 /var/www/mercadolivre/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php(626): Acaldeira_Mercadolivre_Block_Adminhtml_Category_Grid->_prepareCollection()
#5 /var/www/mercadolivre/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php(632): Mage_Adminhtml_Block_Widget_Grid->_prepareGrid()
#6 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(862): Mage_Adminhtml_Block_Widget_Grid->_beforeToHtml()
#7 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(582): Mage_Core_Block_Abstract->toHtml()
#8 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(526): Mage_Core_Block_Abstract->_getChildHtml('grid', true)
#9 /var/www/mercadolivre/app/code/local/Acaldeira/Mercadolivre/Block/Adminhtml/Category.php(39): Mage_Core_Block_Abstract->getChildHtml('grid')
#10 /var/www/mercadolivre/app/design/adminhtml/default/default/template/mercadolivre/category/categories.phtml(14): Acaldeira_Mercadolivre_Block_Adminhtml_Category->getGridHtml()
#11 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/mercad...')
#12 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('adminhtml/defau...')
#13 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#14 /var/www/mercadolivre/app/code/core/Mage/Adminhtml/Block/Template.php(81): Mage_Core_Block_Template->_toHtml()
#15 /var/www/mercadolivre/app/code/core/Mage/Adminhtml/Block/Widget/Container.php(308): Mage_Adminhtml_Block_Template->_toHtml()
#16 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(863): Mage_Adminhtml_Block_Widget_Container->_toHtml()
#17 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#18 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(863): Mage_Core_Block_Text_List->_toHtml()
#19 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(582): Mage_Core_Block_Abstract->toHtml()
#20 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(526): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#21 /var/www/mercadolivre/app/design/adminhtml/default/default/template/page.phtml(74): Mage_Core_Block_Abstract->getChildHtml('content')
#22 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Template.php(241): include('/var/www/mercad...')
#23 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('adminhtml/defau...')
#24 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#25 /var/www/mercadolivre/app/code/core/Mage/Adminhtml/Block/Template.php(81): Mage_Core_Block_Template->_toHtml()
#26 /var/www/mercadolivre/app/code/core/Mage/Core/Block/Abstract.php(863): Mage_Adminhtml_Block_Template->_toHtml()
#27 /var/www/mercadolivre/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#28 /var/www/mercadolivre/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#29 /var/www/mercadolivre/app/code/local/Acaldeira/Mercadolivre/controllers/Adminhtml/CategoryController.php(11): Mage_Core_Controller_Varien_Action->renderLayout()
#30 /var/www/mercadolivre/app/code/core/Mage/Core/Controller/Varien/Action.php(419): Acaldeira_Mercadolivre_Adminhtml_CategoryController->indexAction()
#31 /var/www/mercadolivre/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('index')
#32 /var/www/mercadolivre/app/code/core/Mage/Core/Controller/Varien/Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#33 /var/www/mercadolivre/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#34 /var/www/mercadolivre/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#35 /var/www/mercadolivre/index.php(89): Mage::run('', 'store')
#36 {main}