After installing the Acunetix WP Security plugin I was told that I should change my table prefix from WP_ to something else.
Change the current: WP_ table prefix to something different.
So I changed it as advised but ever since I did my scheduled backup process (using the WordPress Database Backup plugin) no longer works.
So I tried changing the prefix back to "WP_" but the back up process remains broken.
Any help would be appreciated.