Custom .ZIP file created by "Build Your Download" page is not working.

Custom .ZIP file created by "Build Your Download" page is not working.


I'm at the "Build Your Download" page at:
http://jqueryui.com/download
No matter what selections I make, when I click the "Download" button,
I end up getting a .ZIP file that will not open on my Windows Vista
machine. I don't know if the generated .ZIP file is corrupt or what.
If I grab a prebuilt .ZIP file (such as the one at
http://jqueryui.com/download/jquery-ui-1.7.1.custom.zip), then it's
fine ... I can open up the .ZIP file, see the contents, and everything
works. But I'd really like a build with the "Cupertino" theme instead
of "Smoothness".
Has anybody else had problems downloading a customized .ZIP file for
the JQuery UI?
Thanks,
Rajeev