XAS Hero ABS+Crafting System Question

[Angst]

I was wondering if the XAS Hero ABS is compatable with MACL v.2.1 and SDK v.2.3, because when I put the MACL, SDK and Crafting System in my editor I get this error when I talk to the premade npc copied from the Crafting System game project, (for testing if it works).:

????? '5:Crafting System' ? 917 ??? NoMethodError ????????

undefined method `main_commands' for nil:NilClass


In the RGSS Editor, it takes me to this line:

Error pointed to Line: 917 @main_command = Window_Command.new(240, $game_crafting.main_commands)

V-Def Section-V

def main_window
    # Sets Up Help Window
    @help_window = Window_Help.new
    @help_window.width = 608
    @help_window.contents = Bitmap.new(576, 32)
    @help_window.set_text('Welcome. What would you like to do?', 1)
    @help_window.x = 16
    @help_window.y = - 64
    # Sets Up Main Command
    @main_command = Window_Command.new(240, $game_crafting.main_commands)
    @main_command.x = - 240
    @main_command.y = 96
    # Sets Up Crafting Command
    @craft_command = Window_Command.new(240, $game_crafting.crafting_commands)
    @craft_command.x = - 240
    @craft_command.y = 96
    @craft_command.active = false
    # Sets Up Reverse Crafting Command
    @uncraft_command = Window_Command.new(240, 
      $game_crafting.uncrafting_commands)
    @uncraft_command.x = - 240
    @uncraft_command.y = 96
    @uncraft_command.active = false
    # Sets Up Blank Recipe List Window
    @recipe_list = Window_CraftRecipe.new
    # Sets Up Crafting Requirements Window
    @crafting_requirements = Window_CraftRequirements.new
    # Sets Up Confirmation Command
    @confirmation_command = Window_Command.new(160, ['Yes', 'No'])
    @confirmation_command.x = 240
    @confirmation_command.y = 192
    @confirmation_command.z = 250
    @confirmation_command.visible = @confirmation_command.active = false
  end

SDK:
Scripter(s): (SDK Team)
Version: 2.3
Build Date: 2005-11-22

MACL:
Scripter(s): MACL Authors
Version: 2.1
Build Date: 9-17-2006

Crafting System:
Scripter: SephirothSpawn
Version: 1.1
Build Date: 2006-10-17