Zend Framework

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The past week I have been trying to upgrade my sites to Conrete 4.0. Everytime I go to thehttp://youwebsite.com/index.php/tools/required/upgrade... page I get the following errors
Warning: Zend_Cache::require_once(Zend/Cache/Backend/File.php) [function.Zend-Cache-require-once]: failed to open stream: No such file or directory in /home/portal/public_html/timeline/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/portal/php') in /home/portal/public_html/timeline/concrete/libraries/3rdparty/Zend/Cache.php on line 132


I tried to upgrade other sites on a different server and everything worked fine. Could it be that my server is not set up for Zend framework? If so how do I get it set up to work on this server?

Thanks in advance