BuddyPress.org

Yeah, without a $user_id argument, it’ll only work on profile pages. See bp-activity/bp-activity-templatetags.php bp_activity_latest_update().

Try:
`if ( bp_get_activity_latest_update( bp_loggedin_user_id() ) )
bp_activity_latest_update( bp_loggedin_user_id() ); //then show the update
else
// then show this`