@BryanW: If you've moved the exact same file to different computers, and not tried to re-download it each time, that probably means the issue comes from when you downloaded it in the first place.
Because, yeah, the file you got is corrupt, and the files attached here are not, so something went wrong on your end somewhere along the way
.
Like Tiersten said, if it was the same file each time, I'd blame it on faulty memory or a seriously compromised OS on the first box, but if you redownloaded the file each time, and all your computers are on the same network, that points more towards a network issue.
Other than that, I can't really say, other than it shouldn't happen with a sane system/OS/network
.