I have checked the wp_options table and checked the URLs for 'siteurl' and 'home'. Both are correct. I did this by following the instructions here - http://codex.wordpress.org/Changing_The_Site_URL#Changing_the_URL_directly_in_the_database
I thought there may be a conflict with another plugin or theme so I installed on the same server a fresh wordpress site/database and loaded up the booking plugin. I get the same error.
wordpress You don't have permission to access /wp-admin/admin.php on this server.
wordpress 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request
comes up with stuff about file permissions and mod_security. I've checked permissions on folders and files and everything seems fine.
I've added mod_security code to an htaccess file in root and admin folders but with no effect. Code was:
Also tried this with no effect.
It's weird because everything else on the site works fine.
Away for a cup of tea.