Warning: array_unshift() expects parameter 1 to be array, object given  in /usr/www/users/fpoker/magento/app/design/frontend/rwd/poker/template/catalog/navigation/left.phtml on line 60

#0 [internal function]: mageCoreErrorHandler(2, 'array_unshift()...', '/usr/www/users/...', 60, Array)
#1 /usr/www/users/fpoker/magento/app/design/frontend/rwd/poker/template/catalog/navigation/left.phtml(60): array_unshift(Object(Mage_Catalog_Model_Resource_Category_Collection), Object(Mage_Catalog_Model_Category))
#2 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(241): include('/usr/www/users/...')
#3 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/rwd/po...')
#4 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#5 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#6 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#7 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('catalog_sub_cat...', true)
#8 /usr/www/users/fpoker/magento/app/design/frontend/rwd/poker/template/catalog/category/view.phtml(44): Mage_Core_Block_Abstract->getChildHtml('catalog_sub_cat...')
#9 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(241): include('/usr/www/users/...')
#10 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/rwd/po...')
#11 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#12 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#13 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#14 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
#15 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#16 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#17 /usr/www/users/fpoker/magento/app/design/frontend/rwd/poker/template/page/3columns.phtml(60): Mage_Core_Block_Abstract->getChildHtml('content')
#18 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(241): include('/usr/www/users/...')
#19 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/rwd/po...')
#20 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#21 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#22 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#23 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#24 /usr/www/users/fpoker/magento/app/code/core/Mage/Catalog/controllers/CategoryController.php(161): Mage_Core_Controller_Varien_Action->renderLayout()
#25 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_CategoryController->viewAction()
#26 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view')
#27 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#28 /usr/www/users/fpoker/magento/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#29 /usr/www/users/fpoker/magento/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#30 /usr/www/users/fpoker/magento/index.php(87): Mage::run('', 'store')
#31 {main}