This version's definitely working just as needed. I haven't had the time to really mess with it yet, hence my not writing a reply yet. The only thing which I've immediately noticed is flash fire Pokemon taking damage from fire moves, volt absorb Pokemon taking damage from electric moves, and so on. However, this is not a critical problem.
Also, the link in the first post to the most recent calculator currently hyperlinks to the old version when you click on it, despite the text reading the correct Megaupload link.
I'll either edit this post or post again if I find more to add on about the metagame calculator.