ok. here’s the deal. if you are not running multisite then you should go to the plugin folder php-> bp-auto-group-join-init.php
and change
around line 22
// Add AutoGroupJoin Admin Menu to WordPress Action
// Correction submitted by OnYx:
add_action('network_admin_menu', 'auto_group_join_admin_panel');
to
// Add AutoGroupJoin Admin Menu to WordPress Action
// Correction submitted by OnYx:
add_action('admin_menu', 'auto_group_join_admin_panel');
and then also
around line 55
// Correction submitted by OnYx:
add_action('network_admin_menu', 'auto_group_join_check_installed');
to
// Correction submitted by OnYx:
add_action('admin_menu', 'auto_group_join_check_installed');
then reupload this file to the appropriate place on your server and voila!