BuddyPress.org

Double-check your theme’s functions file at /wp-content/themes/wp-clear-basic/functions.php to make sure you added

include( TEMPLATEPATH . '/bp/bp-functions.php' ); right at the top after the opening php tag.

If it’s there, try disabling other plugins one-by-one to see if they might be interfering. The Coming Soon plugin in particular.

And if disabling plugins doesn’t work, try providing some more information because it will make it easier for others to help. https://buddypress.org/forums/topic/when-asking-for-support