Apparently there's loads of files that aren't working. Lots of people have been posting the names of the downloads that aren't working. I tried the blackbuck a few minutes ago. The file download screen saying that I had opened it came up, but there wasn't actually a file. When I tried to WinZip the file, saving it to my usual place,s it came up with an error saying no files to extract.
I can't remember the name of the post, but it's really recent and you'll find it under downloads. I think mikaboshi or whatever his/her name is started the thread. post on the ones you couldn't access