princeofarfon: Just downloaded the game with the GOGDownloader, but I get this message when trying to launch the setup executable. It also says "Error 5: Access is denied." Never had this problem with GOG downloads before. Anyone know a fix? Thanks.
Ravenvolf: In the past when I have had an error with the installer, I deleted the files and re-downloaded, give it a try.
Thanks. What I did was walk away from the computer for a couple hours, and when I just came back, suddenly it's ready to start installing like normal. Didn't redownload or restart or anything. Huh. Well, glad it's working. If I have the problem again with any other GOG game I'll try what you suggested.