http://www.ultimateam.pl/viewtopic.php?t=10456

#======================================================================
# ** SG Battle Retry
#==========================================================================
# Script feito por sandgolem
# Traduzido por Fael000 - Membro da Jogos RPG
#==========================================================================

module SG
BattleRetryCommands = ['Spróbuj Ponownie','Exit']
BattleRetryDisableSwitch = 14
end

#==========================================================================
# Este script permite que você quando perder uma batalha você possa
# reinicia-la, ou seja, tentar de novo.
#==========================================================================

if Object.const_defined?('SDK')
SDK.log('SG Battle Retry', 'sandgolem', 6, '15.01.08')
@sg_battleretry_disabled = true if !SDK.enabled?('SG Battle Retry')
end

if !@sg_battleretry_disabled
#--------------------------------------------------------------------------

class Interpreter
alias_method :sg_battleretry_interp601, :command_601
def command_601
if $sg_retrywon
@branch[@list[@index].indent] = 0
$sg_retrywon = nil
end
return sg_battleretry_interp601
end

alias_method :sg_battleretry_interp602, :command_602
def command_602
if $game_temp.battle_can_escape && $sg_retryescaped
@branch[@list[@index].indent] = 1
$sg_retryescaped = nil
end
return sg_battleretry_interp602
end
end

# class Game_System; attr_accessor :playing_bgm; end
class Game_Temp; attr_accessor :battle_music_playing; end

class Scene_Map
alias_method :sg_battleretry_callbattle, :call_battle
def call_battle
sg_battleretry_callbattle
$game_temp.battle_music_playing = $game_system.playing_bgm.clone
end
end

class Scene_Save < Scene_File
def sg_write_retrysave_data
write_save_data(file)
file.close
end
end

class Scene_Load < Scene_File
def sg_read_retrysave_data
read_save_data(file)
file.close
end
end

class Scene_Battle
alias_method :sg_battleretry_main, :main
def main
$sg_retryescaped = nil
$sg_retrywon = nil
if !$game_switches[SG::BattleRetryDisableSwitch]
if !$sg_battleretry_inbattle && !$game_temp.battle_can_lose
$sg_battleretry_inbattle = $game_temp
sg_scene_save_temp = Scene_Save.new
sg_scene_save_temp.sg_write_retrysave_data
end
end
sg_battleretry_main
if !$scene.is_a?(Scene_Gameover)
$sg_battleretry_inbattle = nil
end
end

alias_method :sg_battleretry_battleend, :battle_end
def battle_end(result)
$sg_retrywon = true if result == 0
$sg_retryescaped = true if result == 1
sg_battleretry_battleend(result)
end
end

class Scene_Gameover
alias_method :sg_battleretry_gameovermain, :main
def main
if $sg_battleretry_inbattle
@sprite = Sprite.new
@sprite.bitmap = RPG::Cache.gameover($data_system.gameover_name)
$game_system.bgm_stop
$game_system.me_play($data_system.gameover_me)
Graphics.transition(90)
@command_window = Window_Command.new(192,SG::BattleRetryCommands)
@command_window.back_opacity = 160
@command_window.x = 320 - @command_window.width / 2
@command_window.y = 288
loop do
Graphics.update
Input.update
sg_retry_update
if $scene != self
break
end
end
@command_window.dispose
Graphics.freeze
@sprite.bitmap.dispose
@sprite.dispose
Graphics.transition(30)
Graphics.freeze
else
sg_battleretry_gameovermain
end
end

def sg_retry_update
@command_window.update
if Input.trigger?(Input::C)
case @command_window.index
when 0
sg_scene_save_temp = Scene_Load.new
sg_scene_save_temp.sg_read_retrysave_data
$game_temp = $sg_battleretry_inbattle
$game_temp.gameover = nil
$game_system.bgm_play($game_temp.battle_music_playing)
$scene = Scene_Battle.new
when 1
$sg_battleretry_inbattle = nil
$scene = Scene_Title.new
end
end
end
end

#--------------------------------------------------------------------------
end

Tak jak błąd mówi brakuje pliku - to brakuje pliku. Ty być może nie
używasz takiego pliku i ok., ale może dodałeś jakiś skrypt ruby,
który do owego pliku się odwołuje.
================================================================================​==============
Zakodowane gry nie posiadają folderu "DATA/" dlatego odwołuje się do
czegoś, czego nie ma.

Skrypt musisz zmodyfikować, usuwając wszystkie linijki co się odwołują
do folderu DATA/

Pierwszy skrypt:
file = File.open('Data/retry.sg', 'wb')
file = File.open('Data/retry.sg', 'rb')
if FileTest.exist?('Data/retry.sg')
File.delete('Data/retry.sg')

File.delete <- jest ponoć użyte dwa razy

drugi:
file = File.open("Data/sg_temps.rxdata", "wb")
file = File.open("Data/sg_temps.rxdata", "rb")
================================================================================​==============

Taką poradę udało się znaleźć, może pomoże.