Tom on "[Plugin: Better WP Security] Locked out due to hiding admin area"

I already had my WordPress admin area in a subfolder: mysite/cms/wp-admin etc

After installing Better WP Security I selected the option to hide the admin area. It said the new admin URL would be mysite/cms/admin but all I get is 404 errors at /admin /login etc

I guess it's conflicting with the fact I already had the admin area in /cms. How can I fix this so I can get back into the admin area? I'm happy to edit directly in the database if needed.

Thanks!

http://wordpress.org/extend/plugins/better-wp-security/