ок, опусти ниже main_save_check. Вот так:
Код:
class Scene_Map
  alias main_save_check main
  def main
    (0...CPSL::Save_number).each {|i|
      filename = CPSL.make_savename(i)
      if FileTest.exist?(filename)
        $game_switches[11] = true
      end
    }
    main_save_check
  end  
end