Anyone trying to buy the digital version of the game but getting a stupid "There has been an error processing your request" error over and over??? I've been trying to buy it since the minute it came on sale, but I can't get the payment though :S

I posted this on the steam forums... but maybe one of you guys can help me out:

I finished downloading metro 2033, and once it was done and it said "Ready to play", I tried to start it up, but I got an error message saying:

"Windows cannot find 'c:programfiles (x86)steamsteamappscommonmetro 2033Metro2033.exe'. Make sure you typed the name correctly, and then try again."

So my first reaction was to restart steam, but nothing changed. Then I tried deleting the clientregistry.blob thing, but again, I was getting the same error. So, I tried an integrity check and just like the error message said, there was a file missing (the main exe file, which I notice was missing in the metro 2033 folder after checking it myself). Once the integrity check was done, It started downloading the missing file. It finished downloading and even though steam said the game was "Ready to play" I got the same error message once I started up the game... Then, again, I deleted the blob file, did an integrity check and redownloaded the "missing" file (metro2033.exe apparently) but nothing happened... It even said the download was completed, but there was no metro2033.exe file in the metro folder!!!!
I repeated the operating like 4 times but I got the same result over and over.... Any ideas??? I REALLY dont want to download the game again since I have a craptastic 256ish kb connection and the codemaster pack from last weekend to download too.... Please help meh!