SQLSTATE[HY000]: General error: 2006 MySQL server has gone away, query was: SELECT DISTINCT `e`.`attribute_set_id` FROM `catalog_product_flat_2` AS `e`
 INNER JOIN `catalog_category_product_index` AS `cat_index` ON cat_index.product_id=e.entity_id AND cat_index.store_id=2 AND cat_index.visibility IN(2, 4) AND cat_index.category_id = '4'
 INNER JOIN `catalog_product_index_price` AS `price_index` ON price_index.entity_id = e.entity_id AND price_index.website_id = '1' AND price_index.customer_group_id = 0 WHERE (e.status = 1)

#0 /homepages/46/d398373456/htdocs/neckels-living/production/public/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute()
#1 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute()
#2 /homepages/46/d398373456/htdocs/neckels-living/production/public/lib/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute()
#3 /homepages/46/d398373456/htdocs/neckels-living/production/public/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query()
#4 /homepages/46/d398373456/htdocs/neckels-living/production/public/lib/Varien/Db/Adapter/Pdo/Mysql.php(504): Zend_Db_Adapter_Pdo_Abstract->query()
#5 /homepages/46/d398373456/htdocs/neckels-living/production/public/lib/Zend/Db/Adapter/Abstract.php(794): Varien_Db_Adapter_Pdo_Mysql->query()
#6 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(1096): Zend_Db_Adapter_Abstract->fetchCol()
#7 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Catalog/Model/Layer.php(290): Mage_Catalog_Model_Resource_Product_Collection->getSetIds()
#8 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Catalog/Model/Layer.php(220): Mage_Catalog_Model_Layer->_getSetIds()
#9 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Catalog/Block/Layer/View.php(163): Mage_Catalog_Model_Layer->getFilterableAttributes()
#10 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Catalog/Block/Layer/View.php(122): Mage_Catalog_Block_Layer_View->_getFilterableAttributes()
#11 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Block/Abstract.php(297): Mage_Catalog_Block_Layer_View->_prepareLayout()
#12 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Model/Layout.php(456): Mage_Core_Block_Abstract->setLayout()
#13 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Model/Layout.php(472): Mage_Core_Model_Layout->createBlock()
#14 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Model/Layout.php(239): Mage_Core_Model_Layout->addBlock()
#15 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Model/Layout.php(205): Mage_Core_Model_Layout->_generateBlock()
#16 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Model/Layout.php(210): Mage_Core_Model_Layout->generateBlocks()
#17 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Controller/Varien/Action.php(344): Mage_Core_Model_Layout->generateBlocks()
#18 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Catalog/controllers/CategoryController.php(148): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#19 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_CategoryController->viewAction()
#20 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch()
#21 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match()
#22 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/code/core/Mage/Core/Model/App.php(381): Mage_Core_Controller_Varien_Front->dispatch()
#23 /homepages/46/d398373456/htdocs/neckels-living/production/public/app/Mage.php(686): Mage_Core_Model_App->run()
#24 /homepages/46/d398373456/htdocs/neckels-living/production/public/index.php(86): Mage::run()
#25 {main}