Might try this and if your frontend is loading make sure that the admin configure DB deatils are exactly the sane as the frontend configure details
Code:
// * DIR_FS_* = Filesystem directories (local/physical)
  //the following path is a COMPLETE path to your Zen Cart files. eg: /var/www/vhost/accountname/public_html/store/
  define('DIR_FS_ADMIN', '/customers/vanjasvagnar.se/vanjasvagnar.se/httpd.www/regina/');
  define('DIR_FS_CATALOG', '/customers/vanjasvagnar.se/vanjasvagnar.se/httpd.www/');
BUT!!!

As you have openly posted the name of your 'secret' admin folder you need to change it again
Many cruise the forums for this type of fopa