Well actually bp_loggedin_user_domain(); and other functions are working on this particular page, so I’m not sure what’s particularly wrong with this one.
I can echo people’s profile URL with: <?php echo bp_loggedin_user_domain(); ?>
This also works:
<?php
global $bp;
$message_inbox_count = messages_get_unread_count();
if ($message_inbox_count > '0') {
echo '<span>'.$message_inbox_count.'</span>';
} ?>
So I’m not sure why the above would work but not bp_get_members_component_link(); ?