read error on connection

#0 /home/httpd/pauleka.com/prod2/lib/Credis/Client.php(440): Credis_Client->__call('select', Array)
#1 /home/httpd/pauleka.com/prod2/lib/Cm/Cache/Backend/Redis.php(117): Credis_Client->select(40)
#2 /home/httpd/pauleka.com/prod2/lib/Zend/Cache.php(153): Cm_Cache_Backend_Redis->__construct(Array)
#3 /home/httpd/pauleka.com/prod2/lib/Zend/Cache.php(94): Zend_Cache->_makeBackend('Cm_Cache_Backend_Redis', Array, true, true)
#4 /home/httpd/pauleka.com/prod2/app/code/core/Mage/Core/Model/Cache.php(137): Zend_Cache->factory('Varien_Cache_Core', 'Cm_Cache_Backend_Redis', Array, Array, true, true, true)
#5 /home/httpd/pauleka.com/prod2/app/code/core/Mage/Core/Model/Config.php(1354): Mage_Core_Model_Cache->__construct(Array)
#6 /home/httpd/pauleka.com/prod2/app/Mage.php(463): Mage_Core_Model_Config->getModelInstance('core/cache', Array)
#7 /home/httpd/pauleka.com/prod2/app/code/core/Mage/Core/Model/App.php(401): Mage->getModel('core/cache', Array)
#8 /home/httpd/pauleka.com/prod2/app/code/core/Mage/Core/Model/App.php(295): Mage_Core_Model_App->_initCache(Array)
#9 /home/httpd/pauleka.com/prod2/app/code/core/Mage/Core/Model/App.php(337): Mage_Core_Model_App->baseInit(Array)
#10 /home/httpd/pauleka.com/prod2/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#11 /home/httpd/pauleka.com/prod2/index.php(111): Mage->run('base', 'website')