TBS Error, Help!

[WildCard]

Okay, so I have Zenith's Tactical battle system, and I have everything set up for the first battle map, but when I beat all the enemies and error comes up:  Script *window Help HUD line 91: RGSSE Error occured - disposed window.

Here's the part of the script it's talking about:

Spoiler

#--------------------------------------------------------------------------
  # * Set Enemy
  #     enemy : name and status displaying enemy
  #--------------------------------------------------------------------------
  def set_enemy(enemy)
    @face_graphic.visible = false
    @HUD_graphic.visible = false
    text = enemy.name
    state_text = make_battler_state_text(enemy, 12, false)
    if state_text != ""
      text += "  " + state_text
    end
    set_text(text, 1)
  end
 
  def visible=(bool)
    @face_graphic.visible = bool
    @HUD_graphic.visible = bool
    super(bool)
  end
 
  def dispose
    # Dispose if window contents bit map is set
    if self.contents != nil
      self.contents.dispose
    end
    @face_graphic.dispose
    @HUD_graphic.dispose
    super
  end
end

Oh, and if this helps then yeah:

Spoiler

#==============================================================================
# Zenith Tactical Battle System
# Event Defeat
#------------------------------------------------------------------------------
# This calls upon Common Events when defeated
#==============================================================================
class Scene_Map
  def beat_event
    case $game_map.map_id
#==============================================================================
# ↓↓Game Over or Victory↓↓
#==============================================================================
#------------------------------------------------------------------------------
# when Map ID
#  return {Event ID => Common Event ID, ...}
#------------------------------------------------------------------------------
#
#  This basically is pretty simple, what happen is when ever something is
#  defeated it can be defined so that a common event will do something in
#  this case call upon gameover is actor1 is defeated and add variables
#  everytime a certain enemy event is subdued....let me explain better.
#
#  Look below at the part with all the number and equal signs.
#
#  1=>5 :What this one does is upon the death of Actor1 it instantly calls up
#  the common event Gameover.
#
#  3=>6, 5=>6 etc: These are enemy events that when defeated call upon the
#  common event 6 which if you check adds a variable up.
#
#==============================================================================
# Game Victory
#==============================================================================

when 1  # It calls upon special common events, everytime someone is beaten
  return {1=>5, 3=>6, 5=>6, 7=>6, 6=>6, 8=>6, 11=>6, 15=>6, 9=>6, 12=>6, 19=>6,
  13=>7}

#==============================================================================
# In any other cases
#==============================================================================
    else
      return {}
    end
  end
  #--------------------------------------------------------------------------
  # â—

 

[RPGS]

That isn`t a correct script