TYPO3 Core

Fatal error: Uncaught exception 'InvalidArgumentException' with message 'Invalid cache backend option "servers" for backend of type "TYPO3\CMS\Core\Cache\Backend\NullBackend"' in D:\codesprint\typo3\master\typo3\sysext\core\Classes\Cache\Backend\AbstractBackend.php on line 86

width installed memcached when accessing Install tool using the following settings in AdditionalConfiguration.php:

$GLOBALS['TYPO3_CONF_VARS']['SYS']['useCachingFramework'] = '1';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pages']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pages']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pagesection']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pagesection']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_hash']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_hash']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_datamapfactory_datamap']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_datamapfactory_datamap']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_typo3dbbackend_tablecolumns']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_typo3dbbackend_tablecolumns']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['t3lib_l10n']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['t3lib_l10n']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['workspaces_cache']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['workspaces_cache']['options'] = array('servers' => array('localhost:11211'),);

Probably due to not correctly resetting cache options in Install tool.