To manually change engine you can edit the wp-content/w3tc-config/master.php file and change pgcache/dbcache/objectcache.engine => ‘apc’ to ‘disc’ where applicapble.
That did not work. After I changed all 3 to disc I get a 500 and it doesn’t even get logged to the vhost or apache’s global error log.
Also, eventhough I never before used APC caching, apc.ini is set to load but apc remains off.
PS: I have newrelic installed.
Remove the config files in wp-content/w3tc-config/ and wp-content/cache/config, then try again. The plugin does not use APC by default so it must be set elsewhere.
I could be a config value from your old config in wp-content so if you have no issue resetting settings you can rename the old config file for testing purposes. Its called w3-total-cache-config.php.
I replaced every instance of ‘apc’ for ‘disc’ in all those config files and the plugin started working. I then upgraded to 0.9.2.7 and this time the upgrade didnt break anything.
I am not sure why 0.9.2.6 decided to switch all caches to ‘apc’
thanks
I faced similier issue. I just deleted the w3 cache then removed the cache directory from wp-content folder and reinstalled the w3 cahce plugin and configured again..That works for me perfectly.
