I've done some fixes in the 'download archive' code. There was a problem whereby it could generate two files with the same name. It should hopefully work OK now.

There still seems to be a problem if you're downloading a very large archive (many hundreds of megabytes) that the server will get confused and return an error. I don't understand why this is because all the code seems fine and a larger file isn't really any differerent to a smaller one!

Anyway, all being well you'll now have a bit more success with the archives!

Thanks

Joe