Sub-menu Tab

[Iqus]

Thanks a lot! But, I don't know if it is triggered by your piece of script (I copyed the parts you said on my own menu) but an error in line 17 from Window_Base crashed the game (Window_Base 17 NoMethodError- undefined method 'windowskin_name' for nil:NilClass):

class Window_Base < Window
#--------------------------------------------------------------------------
# * Object Initialization
# x : window x-coordinate
# y : window y-coordinate
# width : window width
# height : window height
#--------------------------------------------------------------------------
def initialize(x, y, width, height)
super()
@windowskin_name = $game_system.windowskin_name <---- this seems to be the conflict
self.windowskin = RPG::Cache.windowskin(@windowskin_name)
self.x = x
self.y = y
self.width = width
self.height = height
self.z = 100
end

Any ideas?