In order to configure CRELoaded to work properly with another domain, you should modify the two configure.php files in includes/ and admin/includes/ folders to reflect the new domain.

The settings that should be changed in includes/configure.php are:

HTTP_SERVER - you should change this to your new domain name, e.g. http://newdomain.com:

define('HTTP_SERVER', 'http://newdomain.com');

HTTP_COOKIE_DOMAIN - again, this should be changed to reflect your new domain name:

define('HTTP_COOKIE_DOMAIN', 'newdomain.com');

If you are using SSL you should also modify:

HTTPS_SERVER - for example:

define('HTTPS_SERVER', 'https://newdomain.com');

HTTPS_COOKIE_DOMAIN - set this to:

define('HTTPS_COOKIE_DOMAIN', 'newdomain.com');
 

In admin/includes/configure.php, along with the settings above, you should also modify:
 

HTTP_CATALOG_SERVER - again, this should be changed to your new domain name:

define('HTTP_CATALOG_SERVER', 'http://newdomain.com');

If you are using SSL, you should also change HTTPS_CATALOG_SERVER to:

define('HTTPS_CATALOG_SERVER', 'https://newdomain.com');