Hi!
I have the exact same problem (http://charmillaboutique.nl/).
Can you let me know where I can adjust this:
define('_DB_NAME_', 'prestashop');
define('_DB_USER_', 'root');
define('_DB_PASSWD_','root ');
I did find the correct config/settings.inc.php record, but I dont really know where to adjust it..
Hope you can help!