Per the post about the b3 release, this was packaged into a .exe file to keep IE happy. I has come to my attention that some actually think there is a virus in the .msi versions. There is not, feel free to scan it with anything you like. The problem is that Internet Explorer is warning people because .msi files are not typically downloaded. This is why it has been packaged into a single .exe executable file. What is ironic is that .msi is Microsoft Installer and is what is produced by the Microsoft development environment. Yep, it doesn’t complain about a .exe, which of course can contain anything but it does complain about Microsoft’s own packaging format.

In any event, the files inside the .exe that is downloaded are setup.exe and the .msi file, the package is just to prevent IE from complaining.