I've downloaded Riven twice now with the GOG downloader and have gotten a corrupt file both times. I was able to download the original Myst fine with no issues so I have no clue why I keep getting a corrupt file. Furthermore, my connection is not super fast and so it takes 3-4 hours to download this game.

Hi,
try downloading it with your browser.

Also check to make sure your antivirus or firewall are not interfering with the download.

I have the same problem with Real Myst. When I try to open setup and install, it says one of the files is corrupt and doesn't work. I've got Windows XP on both my pcs and have tried downloading it with MSN, and Internet Explorer, and nothing works. I've also tried redownloading it several times. Does anyone's Real Myst even work right? If so I hope someone can tell me what I need to do.
IPJ78

You could try downloading it with a different browser as well like firefox maybe that will get it working? If you still can't get it to run you will probably want to contact gog support about the issue.

Alright I downloaded it again and it works fine now. Thanks for the help though.