Access denied

I have a recurring problem around getting access to my WordPress site, when having installed the Directory Responsive theme. Mark has previously helped me solve this issue, by installing another functions.php file in the theme. BUT – this does not work after having cleared your browser history, which I’ve just done, so now I have no access to the site! I get this message, again:

Error 403: Forbidden
Your PHP settings have been disabled by an H-Sphere administrator.

Your current PHP configuration:
–>
This configuration was changed:
Please bring your PHP configuration in compliance with admin settings or request your administrator to re-enable support of your settings.

You don’t have permissions to access this page. This usually means one of the following:

this file and directory permissions make them unavailable from the Internet.
.htaccess contains instructions that prevent public access to this file or directory.
Please check file and directory permissions and .htaccess configuration if you are able to do this. Otherwise, request your webmaster to grant you access.

So I would like to know how to solve this problem once and for all, without having to every time uninstall the theme and re install it!

Thanks!