PHLiM2's Menu MODs problem

#==============================================================================
# ** Menu Background
#------------------------------------------------------------------------------
#  This section changes the background for all menus.
#==============================================================================
module MENUBG
  MENU_BG_ON = true
  MENU_BG = "menubg"
end

class Scene_Base
include MENUBG
  #--------------------------------------------------------------------------
  # * Create Snapshot for Using as Background of Another Screen
  #--------------------------------------------------------------------------
alias snapshot_for_bgmenu snapshot_for_background
def snapshot_for_background
    $bg_menu_bitmap.dispose if $bg_menu_bitmap != nil
    $bg_menu_bitmap = Cache.picture(MENU_BG)
    $bg_menu_bitmap.blur
    snapshot_for_bgmenu
end
  #--------------------------------------------------------------------------
  # * Create Background for Menu Screen
  #--------------------------------------------------------------------------
  alias create_background_menu create_menu_background
  def create_menu_background
    if MENU_BG_ON
      @menuback_sprite = Sprite.new
      @menuback_sprite.bitmap = $bg_menu_bitmap
      @menuback_sprite.color.set(0, 0, 0, 0)
      update_menu_background
    else
      create_background_menu
    end
  end
end