BuddyPress.org

Hi folks, I’m guessing I’m missing something really obvious here (it’s been a very long time since I worked, my apologies) – but I simply can’t seem to get this snippet working below when it was working perfectly before for me. Everything seems in order, but when I add a new user in admin and then login to that user acc to check, there’s no message. Can anyone spot my problem? Kind thanks for your input.

//auto send msg
function send_message_to_new_member( $user_id) {
    if ( !bp_is_active( 'messages' ) )
        return;
    $args = array(
        'sender_id' => 1,
        'thread_id' => false,
        'recipients' => $user_id,
        'subject' => 'Welcome to This Site!',
        'content' => 'Hello! Welcome to this blah blah' ,
        'date_sent' => bp_core_current_time()
    );
    $result = messages_new_message( $args );
}
add_action( 'bp_core_activated_user', 'send_message_to_new_member', 3 );
//End Welcome PM//

(I’m using all of the latest versions of wordpress, plugins etc etc)