This problem with the Concrete5 script is related to the configuration of PHP on our systems, but it can be easily circumvented by adding the following code to your site:
This line must be added to your config/site.php file:
define('SERVER_PATH_VARIABLE', 'REDIRECT_URL');
And these lines need adding to your .htaccess file:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php [L]
</IfModule>
Let our support team know if you have any problems with this.
