Worked fine in a single buddypress installation. Thanks.
in order to get this to work on a multi-network it was necessary for me to change
line 107 of /plugins/buddypress-facebook/includes/facebook-groups-extension.php
<?php bloginfo('wpurl'); ?>
<?php network_site_url(); ?>
and the admin links to profile pages in a multi-network were not correct but could be worked out.