Loading an image using Pyglet

I am playing around with pyglet 1.2alpha-1 and Python 3.3. I have the following (extremely simple) application and cannot figure out what my issue is:

import pyglet

window = pyglet.window.Window()
#image = pyglet.resource.image('img1.jpg')
image = pyglet.image.load('img1.jpg')
label = pyglet.text.Label('Hello, World!!',
                      font_name='Times New Roman',
                      font_size=36,
                      x=window.width//2, y=window.height//2,
                      anchor_x='center', anchor_y='center')

@window.event
def on_draw():
    window.clear()
    label.draw()
    #    image.blit(0,0)

pyglet.app.run()

With the above code, my text label will appear as long as image.blit(0, 0) is commented out. However, if I try to display the image, the program crashes with the following error:

  File "C:\Python33\lib\site-packages\pyglet\gl\lib.py", line 105, in errcheck
raise GLException(msg)
pyglet.gl.lib.GLException: b'invalid value'

I also get the above error if I try to use pyglet.resource.image instead of pyglet.image.load (the image and py file are in the same directory).

Any one know how I can fix this issue?

I am using Python 3.3, pyglet 1.2alpha-1, and Windows 8.