Fatal error on theme installation

I've had this problem with a couple of themes I've tried to install from here, so I figure I must be doing something wrong.

The first one didn't say it was BP compatible, so I thought that might be it, but the same is happening here.

I get this:

Fatal error: Cannot redeclare bp_dtheme_ajax_querystring() (previously declared in /home/content/65/3511365/html/truereviewpledge/wp-content/themes/bp-business/_inc/ajax.php:17) in /home/content/65/3511365/html/truereviewpledge/wp-content/plugins/buddypress/bp-themes/bp-default/_inc/ajax.php on line 157

Any thoughts would be appreciated.

Thanks. :slight_smile: