Notice: Trying to get property of non-object  in /data/cosco/releases/20150716154759/app/Mage.php on line 769

#0 /data/cosco/releases/20150716154759/app/Mage.php(769): mageCoreErrorHandler(8, 'Trying to get p...', '/data/cosco/rel...', 769, Array)
#1 /data/cosco/releases/20150716154759/app/code/core/Mage/Core/Model/Config.php(293): Mage::isInstalled(Array)
#2 /data/cosco/releases/20150716154759/app/code/core/Mage/Core/Model/App.php(413): Mage_Core_Model_Config->loadModulesCache()
#3 /data/cosco/releases/20150716154759/app/code/core/Mage/Core/Model/App.php(343): Mage_Core_Model_App->_initModules()
#4 /data/cosco/releases/20150716154759/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#5 /data/cosco/releases/20150716154759/index.php(89): Mage::run('', 'store')
#6 {main}