What do you mean which installer? Downloaded and installed from Beta website.
There are several different installers you get ... I know there's one that automatically downloads every program and then there's one that lets you pick only the programs you want.
From the login.live.com site you may see the wlsetup.exe or wlsetup-custom.exe files for download and installation off of the finished release site there. There's also a wltoolbar.exe for the Live toolbar as another web installer.
The name for this one however is the wlsetup-webd.exe that downloads direct from the beta site totally separate there.