I’ve been getting the [an error occurred while processing this directive] error every time I go to my website. I googled it and found this http://wordpress.org/support/topic/204631?replies=4. People suggested it was caused by the WP Super Cache plugin. I’m currently running 0.9.7. Well, how could you get to the plugins interface if every page displayed that error?
I ended up using phpMyAdmin that my host has and went in the database to manually disable the plugin. Luckily the tables and data entry values were specific so it wasn’t hard to figure out where to start looking. The table you want to look for is “wpau_active_plugins_info”. This table should have records of plugins that are active – hence the table name. Inside this table, look in “plugin_name” column. This is where I found the WP Super Cache entry. I deleted it and reload the page. It fixed the problem.