I promise you I don't do anything special. This game has already been downloaded and unzipped by a lot of other players ?!!? I use 7zip
Again, it is weird since it is only YOUR zip that has had problems with. Yours also has been the only one that uses an underscore instead of dashes & dots as part of the file name. I don't know enough about how these things work to really know what is going on.
Unlike any other 'normal' zip file my PC doesn't ask if you want to open this file before doing it, it just auto-opens Winzip without me asking and then closes it. It's rather surreal. But let's see if 7zip works any different...