Script 'Game_Interpreter' line 750: error. can help?

Hello Guys...i've found a Bug very dangerous and cant fix it by myself, is there anyone who can help me?

I use RPGM VX, just to say it.

Today, programming, i've found a BIG problem...
Until today, nothing strange. than i added the Modern algebra catalogue and get a strange Bug. So i deleted it...but it seems the problem wasnt the script...to be sure i deleted any script added until today [Omega Quest Journal, ATS 3 Text Editor and Monster Catalogue from Modern Algebra] and stil get that error.

the problem is, when i use a variable to check the number of any item in the inventory, it say:

Script 'Game_Interpreter' line 750:NoMethodError occurred. undefined method '[]' for nil:NilClass

The line 750 is:       actor = $game_actors[@parameters[1]]
I really dont know what it means...something about exp? why exp?

This happen anytime i use something like:

Contol Variables [00xx:wood carried]=[wood] in inventary

the full input is
Contol Variables [00xx:wood carried]=[wood] in inventary
  Conditional Branch: Variable [00xx:wood carried] >= 80
    Text: "You are carring much Wood! Beware, anything over 99 units will be
         discarded!"
    Else: Nothing

Doesent matter if i use a Action Button or Parallel Event.

I've tried to change the variable position, the item position and number, nothing...
it still crash when i check the variable. I've also tried to change the icon XD
I cant find a way to solve that crash... i've plenty of Quests like "find X number of Y and bring to me" so i need to use variables that way...
Maybe i've used to much variables in the whole game and it got bugged and mad?
Any ideas to solve it? ^^
i just cant understand...i've never messed up with anything strange aside adding some script in the right area and now suddently the game crash if i try to count the item in the inventory of the party...
If i cant fix this i think i've lost tre month of game-creating...and i have no backup since i didnt ever think it could happen...

Sorry for the trouble, hope someone can help.
Thank for your time. ^^

i've tried also another thing...
i've started a complete blank game and set just one new item, calling it "wood"
Then i set a parellel event this way:

control variables [0001: wood] = [wood] in inventory
    Conditional branch: [Variable 0001: wood] => 50
       Text: "something, just testing"
  Else:

it give to me the same error! also if is a total blank new game?
Does this means my RPGM VX is somehow bugged?

Thanks for your time, and sorry for my not-so-good english ^^


PS: i'va also tryed to remove RPGM VX and istall it again, start a blank new game, and try the same action. still it give me the error. What really i cant get is why? This mornig all was running normal with those variables, now it seems they arent fine anymore with the game...also if i have installed a new RPGM VX and just set a variable! i'm missing something important? In the morning that variable was running without problems... sigh...

http://rmrk.net/index.php/topic,25243.0.html

I responded as well in the Monster Catalogue topic, but it is an error with the default scripts. All you need to do to fix it is go to Game_Interpreter and replace the command_122 method with:

Code: [Select]

  def command_122
    value = 0
    case @params[3]  # Operand
    when 0  # Constant
      value = @params[4]
    when 1  # Variable
      value = $game_variables[@params[4]]
    when 2  # Random
      value = @params[4] + rand(@params[5] - @params[4] + 1)
    when 3  # Item
      value = $game_party.item_number($data_items[@params[4]])
    when 4
      actor = $game_actors[@params[4]]
      if actor != nil
        case @params[5]
        when 0  # Level
          value = actor.level
        when 1  # Experience
          value = actor.exp
        when 2  # HP
          value = actor.hp
        when 3  # MP
          value = actor.mp
        when 4  # Maximum HP
          value = actor.maxhp
        when 5  # Maximum MP
          value = actor.maxmp
        when 6  # Attack
          value = actor.atk
        when 7  # Defense
          value = actor.def
        when 8  # Spirit
          value = actor.spi
        when 9  # Agility
          value = actor.agi
        end
      end
    when 5  # Enemy
      enemy = $game_troop.members[@params[4]]
      if enemy != nil
        case @params[5]
        when 0  # HP
          value = enemy.hp
        when 1  # MP
          value = enemy.mp
        when 2  # Maximum HP
          value = enemy.maxhp
        when 3  # Maximum MP
          value = enemy.maxmp
        when 4  # Attack
          value = enemy.atk
        when 5  # Defense
          value = enemy.def
        when 6  # Spirit
          value = enemy.spi
        when 7  # Agility
          value = enemy.agi
        end
      end
    when 6  # Character
      character = get_character(@params[4])
      if character != nil
        case @params[5]
        when 0  # x-coordinate
          value = character.x
        when 1  # y-coordinate
          value = character.y
        when 2  # direction
          value = character.direction
        when 3  # screen x-coordinate
          value = character.screen_x
        when 4  # screen y-coordinate
          value = character.screen_y
        end
      end
    when 7  # Other
      case @params[4]
      when 0  # map ID
        value = $game_map.map_id
      when 1  # number of party members
        value = $game_party.members.size
      when 2  # gold
        value = $game_party.gold
      when 3  # steps
        value = $game_party.steps
      when 4  # play time
        value = Graphics.frame_count / Graphics.frame_rate
      when 5  # timer
        value = $game_system.timer / Graphics.frame_rate
      when 6  # save count
        value = $game_system.save_count
      end
    end
    for i in @params[0] .. @params[1]   # Batch control
      case @params[2]  # Operation
      when 0  # Set
        $game_variables[i] = value
      when 1  # Add
        $game_variables[i] += value
      when 2  # Sub
        $game_variables[i] -= value
      when 3  # Mul
        $game_variables[i] *= value
      when 4  # Div
        $game_variables[i] /= value if value != 0
      when 5  # Mod
        $game_variables[i] %= value if value != 0
      end
      if $game_variables[i] > 99999999    # Maximum limit check
        $game_variables[i] = 99999999
      end
      if $game_variables[i] < -99999999   # Minimum limit check
        $game_variables[i] = -99999999
      end
    end
    $game_map.need_refresh = true
    return true
  end


You have to replace the whole method - it will look almost identical but there are two errors in that method that need to be fixed and the above code does it.

Thank for the quick reply Algebra! I owe you so much...ill go to test it strait now...i just have to emm...installa gain the RPGM VX...i was trying everything heheheh XD
So, this is a Bug that is a "standard" in the game, or is something that happen just using scripts?
The real strange issue is that this morning it was cool without giving that error.
It just popped out from nothing O_o
But Thanks a lot... now i re-install and try to change that code.

Modern Algebra...you truly are a Genius...it worked!
If i just have had a little bit of coolness...now i must rewrite all monster description and some other things i trowed away to find where was the error i've made..[i was sure was my fault in some way or another XD i'm a noob eheheh]

So that kind of bus is "inside" the game and must be corrected for anyone using RPGM VX? Or is indeed something i've messed up adding some script?
Sorry if i bother you, i ask becouse i'm curios and really appreciate dis game...and to say it, you seem very proficient in what you do, so i grab the chance to ask you this thing, becouse also 2 other friend of mine whant to install VX. So if that problem is inerithed by the game itself, i must save this script of yours and give to them too, to fix that terrifing bug.

Anyway very, very, very much tanks! You saved me a lot of truble and my little pet [my game] in wich i'm pouring sweat and blood XD [but is tooooo funny to stop heeheh]

thanks a lot! **hug**hug**sweet hug**

Yeah, it's a bug that comes standard in the game. Nothing you did caused it to happen.