loaded domain mapping plugin now stuck in circular request for login

virgin install. made sub directory multisite. installed domain mapping plugin now all admin attempts go to wordpress login. put good password in and it infinite return to login page. if put in bad password it tells you to enter correct password. don't know how to disable with out admin and need this to work for this this project.

logged out before doing any admin in domain mapping. thought i needed to before doing admin to pickup change in wp-config.php