from psychopy import visual, core, misc, event
import numpy #for maths on arrays
from numpy.random import random, shuffle #we only need these two commands from this lib
from random import *
import math

win = visual.Window([1024,768], units='pix', monitor='testMonitor',rgb=(-1,-1,-1))

numbers = range(100) #range of stimuli to be generated or how many to generate

#Choose N, elementsize and filenames

for x in numbers:

N=85 #number to generate0
#To choose which stimuli to generate uncomment the appropriate line
#Contour length
#elemSize = 2000/((N)*math.pi*2)#contour lentgth
#elemSize = 2000/((50)*math.pi*2)#50CLcontrol

#Brightness controls
# elemSize=math.sqrt(70000/((N)*math.pi))#...

#create empty list of locations

while i<=N :

#build an array of circles according to the parameters
globForm = visual.ElementArrayStim(win, nElements=N, units='pix',sizes=elemSize,fieldShape='s...

win.flip(clearBuffer=False)#redraw the buffer

#adjustfilename as appropriate
event.clearEvents()#keep the event buffer from overflowing

The error message im getting,

Running C:\Documents and Settings\Administrator\Desktop\NumberStu...
configured pyglet screen 0
Exception in thread Thread-3:
Traceback (most recent call last):
File "threading.pyc", line 460, in __bootstrap
File "", line 181, in __run
File "threading.pyc", line 440, in run
File "", line 1687, in _runFileAsImport
File "<string>", line 1, in <module>
File "C:\Documents and Settings\Administrator\Desktop\NumberStu... line 36, in <module>
File "psychopy\visual.pyc", line 2519, in draw
AttributeError: Window instance has no attribute '_progSignedTexMask'

To provide as much information as possible im using a script editor i think that what they would be called i know almost nothing about programming, called PsychoPy IDe which can be found here. Ive downloaded the windows versions of the psychopy ide and all the dependiences for python and python and im still gettting the same error message. Can anyone tell what is wrong with the code or possible a place that could "debug" it and tell me which line is causing the problem my professor wrote the code but knows only enough to write it and could possible fix it if someone could tell mewhat line is causing the error.

if more information is needed to solve this issue jsut let me know and i can [provide it to the best of my abilities

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