RunTime error in Windwos 8

Hi!!

I just buy a Windows 8 laptop.

When I try to compile for first time in this enviroment my project (ran perfectly in windows7)

I find this problem in the console

Copyright © 2009-2011  A n s c a ,  I n c .

        Version: 2.0.0

        Build: 2011.704

createScene de Intro

Runtime error

        …wnloads\proyecto\proyecto\on going - copia\Intro.lua:71: bad argument

 #-2 to ‘insert’ (Proxy expected, got nil)

stack traceback:

        [C]: ?

        [C]: in function ‘insert’

        …wnloads\proyecto\proyecto\on going - copia\Intro.lua:71: in function

This lines in my code are:

60    but_comenzar = widget.newButton

61  {

62        left = globals.ancho/2 - (globals.ancho/3)/2, – Posicion deseada menos la mitad del ancho del boton

63        top = globals.alto/3 + globals.alto/3 - globals.alto/80,

64        width = globals.ancho/3,

65        height = globals.alto/10,

66        id = “but_comanezar”,

67        fontSize = 40,

68        label = “Comenzar”,

69        onRelease = on_but_comenzar_Touch

70    }

71    screenGroup:insert( but_comenzar )

I cant understand why, is for the Operative system?

Am I forgot install other APIs?

During the “simulation” the game display dont show me all the buttons, images, after this error.

In windows 7 if I ad an error, one pop up window show me information and stop the “simulation”

I hope that anybody can help me because I bought the laptop only for develop games…

Thanks in advance

Regards!