spelth on "Authenticating new/existing accounts with LDAP"

Hi,
after several hours of troubleshooting i replaced the return-statement at the end of the function:
return $authorized;
with these line (returns the admin-userobj and sets the admin-rights)
$_zp_current_admin_obj = Zenphoto_Authority::getAnAdmin(array('user=' => 'admin','valid=' => 1));
$authorized = $_zp_current_admin_obj->getRights();
return $authorized;
But index.php is calling the password.php instead of calling setThemeColumn(), it basically isn't doing the checkAccess(..) function.
Maybe you can give me hint to get this done?