Installation was a breeze. Strangely though, I was taken to a different URL (mydomain.com/JUPGRADE/administrator) to log into my admin area. Checked my site and there were no changes. Turned out it didn't upgrade my site at all, but rather gave me a sub-domain. I had to type mydomain.com/JUPGRADE to see the new version. Good thing about it though was that I was able to see what the newest version looks like. I would give this a five star, but it looks more like a preview of some sort... Or maybe I was suppose to pay for the real one? Anyway, did the upgrade manually. Not hard at all. I only thought it'd be hard since there is an extension to do an upgrade... I think everyone is looking for a short cut, but if you really learn to do things, it will be MUCH easier.