Upgrading to Concrete 4.0
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I tried upgrading and did everything on this pagehttp://www.concrete5.org/help/building_with_concrete5/installation/... but i keep getting the error
Fatal error: Zend_Cache::require_once() [function.require]: Failed opening required 'Zend/Cache/Backend/File.php' (include_path='.:/usr/lib/php:/usr/local/lib/php:/home/php') in /concrete/libraries/3rdparty/Zend/Cache.php on line 132
Fatal error: Zend_Cache::require_once() [function.require]: Failed opening required 'Zend/Cache/Backend/File.php' (include_path='.:/usr/lib/php:/usr/local/lib/php:/home/php') in /concrete/libraries/3rdparty/Zend/Cache.php on line 132
