when trying to install Patcher_1.1_ATARI_DD.exe my computer says "Installed game version is invalid or incomplete" I have the USA gamestop version of witcher 2, and i have installed and already activated on windows 7 . please help? what am i doing wrong?

the reason i am posting hear is because for some reason gmail will not allow me to email tw2support@thewitcher.com.

I havent tried since i have the gog version but have you tried this one? http://wpc.420c.edgecastcdn.net/00420C/files/Patch0/Patcher_DD.exe its supposed to be for all digitally downloaded versions of the game from around the world.
or this link if you already have installed and activated it seems.
http://wpc.420c.edgecastcdn.net/00420C/files/P1_1/Patcher_1.1_International.exe

Remove any mods (if you have any).
Try and run patch as admin: right click patch > Run as Admin.

That dont work try:

North America - Atari and affiliates
http://wpc.420C.edgecastcdn.net/00420C/files/Patch0/Patcher_ATARI.exe

That dont work either, reinstall the game and it'll auto patch to 1.1

thanks it worked