Magento Upgrading Magento 1.3 to 1.4 Class 'File' not found Cache.php

Question

Upgrading from Magento 1.3 ( using full package -> overwrite ) . I get

Fatal error: Class 'file' not found in /home/www/r2h/mysite.net/public/lib/Zend/Cache.php on line 153

Something to do with the cache I guess..? I have cleared apc and there is no file in /app/etc to delete which usually clears the cache.

I'm a bit baffled now.? Thanks :-)

Answer 1

Magento 1.4 and newer works a bit different on clearing the cache.

That file named cache.ser (I think that's the name) no longer exists and its function has been moved into the core_cache_option table in the database. Turn off Cache in Database.

To manually clear the Magento cache, delete all the subdirectories in app/var/cache.

Answer 2

ok - Found the answer. I was overwriting my 1.3 files instead of starting with a clean directory and updating the database - then moving themes, extensions etc over.