You guys having this issue, is there anything unusual about your Windows 7 configuration? Like do you have multiple users or anything unusual about your user account?
Can one of you who has had this problem yesterday and got the message that the download was complete, look in your Aces High folder and see if there is a file named HRP2280TO2284.EXE. If there is, please run it and see if the installer will run manually and let me know. Please let me know right away if it's there and if it runs. Thanks.