error message when installing theme

SOMEONE PLEASE HELP.....everytime I try to install the daily theme I get this error message:
Fatal error: Cannot redeclare bp_dtheme_ajax_querystring() (previously declared in /home/thecicom/public_html/thecherrymartini.com/wp-content/themes/bp-daily/_inc/ajax.php:17) in/home/thecicom/public_html/thecherrymartini.com/wp-content/plugins/buddypress/bp-themes/bp-default/_inc/ajax.php on line 157

and it crashes my site EVERYTIME!!, how do we fix this?
thanks