[spiel2001]

Cool... thanks Brillynt.

We can probably work around the taint problem by using the visibility engine in the setup of the frame instead of the Show() / Hide() methods in the update...

RegisterStateDriver( frame, "visibility", "[target=vehicle, exists] hide; [target=pet, exists] show; hide" );

if update_state then
    for i=1, #frame.Buttons do
        frame.updateState( i );
    end

end