core/website core/store_group 
Can't retrieve entity config: core/store_group

#0 /data/web/public/app/code/core/Mage/Core/Model/Resource.php(274): Mage::throwException()
#1 /data/web/public/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(272): Mage_Core_Model_Resource->getTableName()
#2 /data/web/public/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(234): Mage_Core_Model_Resource_Db_Abstract->getTable()
#3 /data/web/public/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(142): Mage_Core_Model_Resource_Db_Abstract->getMainTable()
#4 /data/web/public/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(179): Mage_Core_Model_Resource_Db_Collection_Abstract->getMainTable()
#5 /data/web/public/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(123): Mage_Core_Model_Resource_Db_Collection_Abstract->_initSelect()
#6 /data/web/public/app/code/core/Mage/Core/Model/Config.php(1441): Mage_Core_Model_Resource_Db_Collection_Abstract->__construct()
#7 /data/web/public/app/code/core/Mage/Core/Model/Config.php(1477): Mage_Core_Model_Config->getModelInstance()
#8 /data/web/public/app/Mage.php(551): Mage_Core_Model_Config->getResourceModelInstance()
#9 /data/web/public/app/code/core/Mage/Core/Model/Abstract.php(208): Mage::getResourceModel()
#10 /data/web/public/app/code/core/Mage/Core/Model/Abstract.php(221): Mage_Core_Model_Abstract->getResourceCollection()
#11 /data/web/public/app/code/core/Mage/Core/Model/App.php(627): Mage_Core_Model_Abstract->getCollection()
#12 /data/web/public/app/code/core/Mage/Core/Model/App.php(477): Mage_Core_Model_App->_initStores()
#13 /data/web/public/app/code/core/Mage/Core/Model/App.php(360): Mage_Core_Model_App->_initCurrentStore()
#14 /data/web/public/app/Mage.php(742): Mage_Core_Model_App->run()
#15 /data/web/public/index.php(55): Mage::run()
#16 {main}