Error in Studio Theme Installation

When activating the Studio theme, I got this error and my site went down....any ideas how to fix?

Fatal error: Cannot redeclare bp_dtheme_ajax_querystring() (previously declared in /home/content/70/5722070/html/wp-content/plugins/buddypress/bp-themes/bp-default/_inc/ajax.php:20) in /home/content/70/5722070/html/wp-content/themes/studio/_inc/ajax.php on line 63