problem activating buddypress on my multisite marketpress site

Have multipress and marketpress installed, When I activate buddypress the whole site shuts down and this message comes up: Fatal error: Cannot redeclare bp_dtheme_register_actions() (previously declared in /home/content/03/10229803/html/wp-content/themes/bp-social/_inc/ajax.php:30) in /home/content/03/10229803/html/wp-content/plugins/buddypress/bp-themes/bp-default/_inc/ajax.php on line 77.

When I deactivate the buddypress plugin then the site returns back to normal. Please someone help with this issue. How do I resolve this issue?