Ah ha - got it! Turned out it was an expired access token, so getting a new one - this worked: 
        $fb->access_token( $access_token ); 
        $fb->add_post()
           ->to(490559244324622)
           ->set_message('I like beer2.')
           ->publish;

[download]

In reply to Re^4: Post on FB (cron) by ultranerds
in thread Post on FB (cron) by ultranerds

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