I'm having slightly the same problem. I don't have a Mac but I went on today and it said to install the patch. No biggie so i installed it but for some reason at the end of my installation it pops up saying that it could be a possible threat to the computer. Of course Norton pops up in the corner saying it is safe because it is. So i just ignored that message. I went onto Feral-Heart but it said I still needed to download the patch when I already did.