Reg: PIL2.4 Error: AttributeError: pixel_access

[Kottiyath]

Hi all,
    I am facing the following problem in PIL 2.4:
Code:
img = ImageGrab.grab()
img.save("image2.jpg")

Error:
    img.save("image2.jpg")
  File "C:\Python24\Lib\site-packages\PIL\Image.py", line 1372, in
save
    self.load()
  File "C:\Python24\Lib\site-packages\PIL\Image.py", line 599, in load
    return self.im.pixel_access(self.readonly)
AttributeError: pixel_access

When I googled this error, I saw that such an error could be because
of some botched installation. So, I re-installed PIL. But still this
error persists.

The version is
>>> print Image.VERSION
1.1.6

I had installed PIL in Python2.5 earlier and had done image capture
also. But I need to go back to Python2.4 (because pymedia exe is
available for only python2.4) and now I am facing this issue.

I am pretty new to application programming, so if someone can help me
out, it would be very helpful.

Regards,
Kottiyath