For Volcano Man...

[Volcano Man]

Well, the nearest I can tell after looking at it is that Internet Explorer 8 has some problems. I can download the files fine in other IE versions, and also in Firefox, but IE8 seems to say that each download is invalid. The solution would be to get Firefox for the time being (which is free):

http://www.mozilla.com/en-US/firefox/personal.html

...it has a built in download manager which comes in handy needless to say (resumes downloads that do not finish properly). Microsoft will probably update IE soon I would think to fix this problem -- I just don't see anything else it could be since, if I recall correctly, IE was just recently updated.