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

 
Tony replied on at Permalink Reply
Tony
looks like you're probably just missing a file.
tsidell replied on at Permalink Reply
tony, any idea what file. I was using the latest version of concrete then just replaced that folder with the new concrete 4 folder.
Tony replied on at Permalink Reply
Tony
try reuploading /concrete/libraries/3rdparty/zend

but if some of those are missing, then you may just want to reupload the entire core just to make sure.

if that doesn't do it, then it could be a permissions issue. make sure all those files are at readable and executable by the server
tsidell replied on at Permalink Reply
ive tried that but no such luck. Anyone else running into this problem?
tsidell replied on at Permalink Reply
ive uploaded the same exact package that I downloaded from concrete5, so you tell me what files I'm missing.
synlag replied on at Permalink Reply
synlag
Has the cache been enabled before upgrading?

If you have access to the database try to set the Flag ENABLE_CACHE in CACHE table to 0 and clean the cache directory in files/cache via ftp.
andrew replied on at Permalink Reply
andrew
I agree with Tony. Can you verify that the directory you're uploading contains the file:

concrete/libraries/3rdparty/Zend/Cache/File.php

Is it possible that the FTP client in question is not uploading files a certain level deep?
defunct replied on at Permalink Reply
defunct
that file doesn't exist in the zip.

There is File.php in both

concrete\libraries\3rdparty\Zend\Cache\Backend

and

concrete\libraries\3rdparty\Zend\Cache\Frontend

but none in the Cache dir itself.
Mnkras replied on at Permalink Reply
Mnkras
some one else was having this problem as wel