Yeah, the version in the Web Gallery is old. I've recently re-submitted the new version and hope it will go live in the Gallery soon.
But, if you download the latest mojoportal from Codeplex, you can still install it with the Platform Installer. After installing the Platform installer you'll see a link in the bottom right of IIS 7 (after selecting the web site) that says "Import Application". Use that and browse to our zip file and it should install easily.
Hope it helps,