after i download the game and i try to instal it, setup says is data is corrupted and i should try to download the game again.
i have already downloaded it three times but i get the same error all the time.
wat can i do?

If the setup is corrupted you'll likely have to redownload.

I don't know which method you used to download your files, gog's downloader or your browser, but you could try whatever method you didn't used yet to get the installer.

Also, sometimes AV's and Firewalls can get in the way of the download/install processes, so maybe you could try to temporarily disable them while you download/install the game.

I'm sure you did but . . . make sure on the download dialog that it is set to Save and not Run . . . =)

thanks, i already solved the problem