No errors on the server log when clicked the “load more” however I did get this errors when upgraded to the latest version of rtmedia today.
[error] 1892#0: *4212 FastCGI sent in stderr: "PHP message: WordPress database error Table 'dbname.wp_bp_groups' doesn't exist for query UPDATE wp_rt_rtm_media m join wp_bp_groups bp on m.context_id = bp.id SET m.privacy = 0 where m.context = 'group' and bp.status = 'public' and m.privacy <> 80 made by activate_plugin, include_once('/plugins/buddypress-media/index.php'), RTMedia->__construct, RTMedia->update_db, RTDBUpdate->do_upgrade, do_action('rt_db_upgrade'), call_user_func_array, RTMedia->fix_group_media_privacy
PHP message: WordPress database error Table 'dbname.wp_bp_groups' doesn't exist for query UPDATE wp_rt_rtm_media m join domain.comwp_bp_groups bp on m.context_id = bp.id SET m.privacy = 20 where m.context = 'group' and ( bp.status = 'private' OR bp.status = 'hidden' ) and m.privacy <> 80 made by activate_plugin, include_once('/plugins/buddypress-media/index.php'), RTMedia->__construct, RTMedia->update_db, RTDBUpdate->do_upgrade, do_action('rt_db_upgrade'), call_user_func_array, RTMedia->fix_group_media_privacy" while reading response header from upstream, client: 98.155.245.144, server: domain.com, request: "GET /wp-admin/update.php?action=activate-plugin&networkwide&plugin=buddypress-media%2Findex.php&_wpnonce=99eec566ae HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "www.domain.com", referrer: "http://www.domain.com/wp-admin/update.php?action=upgrade-plugin&plugin=buddypress-media%2Findex.php&_wpnonce=36965aabaf"