Error Code 400: Can't get past Launcher

Firstly lets start with Square - love the game. Good job blending all the bests of today's MMO's with a couple of new things, your trade mark prettiness, and a solid solo campaign.

The real issue: Last night, game booted me from the server. Then it crashed and gave me a weird error. when I ran the launcher again I got:

A System Error has occurred: 400.

Went to bed, thinking time and shutting down my PC and restarting resolves most things. Got back up and its still doing it. Been doing it all morning. I have a support ticket open with Square. We'll see what happens.

Does anyone have any other ideas BESIDES just keep trying or reinstalling.

I have the same thing. Can't get passed the launcher at all. At first, the start menu was greyed out and now the launcher won't load.

Well I'm installing the game client on my wife's computer. Interesting enough its going fine thus far. Which makes me wonder why a complete reinstall didn't work for me on my computer. Will experiment further and report back if I come up with something.