version update files are corrupted?

[Skylarias]

So. I stopped playing FF in the fall/early winter of last year as I got bogged down in school stuff. After I graduated I started to try playing Realm Reborn again. Much to my dismay it wouldn't work, even though I had literally changed ABSOLUTELY nothing on my computer since the last time playing it (I went weeks without even turning on my pc, using my laptop only)

When doing the update, at first it would give me several error codes. Then for weeks it consistently gave me the "One or more version files are corrupted" spiel. I've tried everything on the web I could find- as well as everything the support tech suggested.
The only thing I haven't done yet is wiping my hard drive and reinstalling windows 7. He did suggest a system restore... but I don't see how that would help.
Which logically, shouldn't be necessary in order to play a game that used to work just fine on my pc.

I've uninstalled the game, deleted all files associated with it, and attempted to reinstall several times. This is what I get from the client:




Meanwhile, I'm kinda pissed from paying for two months' of subscriptions just wasting them trying to troubleshoot the issues arising from the SE updates.

And the help from "support" only refers me to someone else:

Agent Alfred P: If this is a bug with your particular computer, then we definitely need to report this as a glitch to the development team by posting this in the support forums to have them look into the issue.
Agent Alfred P: You can post this on the technical support forums and reporting as a bug or glitch.