We have just become aware of a problem with the windows version of the installer where the physx installation wouldn't start. We have tracked down and fixed the problem. As I write these lines the corrected version is uploading to our server. If you have been affected by this problem - please try again the new version. If there are any more problems or bugs you have found - please let us know.

Edit: We are also experiencing some problems with the download server. If you are unable to download the game - please try again in a few minutes. We are working on setting up a mirror.