Hi,
I just tested it and it worked fine for me.
I remember encountering this one time. I think if you previously had an older version of Platform installer installed you may need to uninstall Platform Installer, uninstall MSDeploy, then re-install the latest Platform Installer and use it to install the latest MsDeploy. It does not seem to be able to upgrade the MsDeploy correctly, it needs the uninstall/reinstall.
Hope it helps,
Joe