This isn't really the right place for this but Gamesplanet doesn't have a forum and maybe some other people have used this service.

I bought a download version of Witcher 2 from Game UK, which uses Gamesplanet to sell downloadable versions of games. I have not been able to install the game as I keep betting "source file corrupt" errors. I've downloaded the setup files several times now but keep getting the error. Has anyone else purchased from Gamesplanet, and has it worked for you?