> > I think the problem is that the picture file has become corrupted. The
> > thumbnail is stored at the start of the file and so often still works
> > when the rest of the file has become corrupted.
> >
> > You say that other applications will open the file, but is the
> > complete image displayed correctly, or is there even a very small
> > problem with the very bottom of the picture.
> >
> > The pciture size and screen resolution should not be important at all.
>
> If this is the case, and it "happens all the time with my photos",
> then it raises the issue of what is damaging his photos...

Thanks for the reply but I really don't think the files are corrupted. The
reason I say that is because it won't work one second and then if I go to the
next photo and come back to it, it will work all of a sudden. There is no
pattern to when it works and when it doesn't. But if I scroll through a
directory of photos, 1 of 5 will give me that error and again, if I go past
and come back, they are fine. And its definitely not a performace issue. My
machine is a Core2Duo 2.4 with 2 gigs of ram and over 30 gigs of hard drive
space so it should be able to handle this stuff with ease. To fix my problem
though I downloaded IRFANVIEW and love it. I won't go back to Windows
viewer. This one is much faster and 100x the options. Great program! I
just haven't been able to find out how to zoom with the scroll wheel. I
would still like to figure out the windows viewer problem but IRFANVIEW will
be going on all my computers and everyone elses that I know.