Feral Heart

I have a guestion, I have a Windows 8 HP 2000 Notebook PC and I have downloaded a map from my friend, from media fire, but when I downloaded this and tried to get it to open the aug 22 markings.zip  foulder it tells me error and that I can't open it, I downloaded 7-zip but it won't work, I also downloaded winzip for PC, but it didn't work either, any tips or help? Please? I can't download items either, same reason.