Ok so... I was playing fine yesterday...until today, where you put this client "update".

Now I'm unable to play the game.
I tried even to re-install it, but now I can't even begin the update, always because of the client update it does at the beginning, that I think it's corrupted or something.

It is a Windows error that says : FFXIV a realm reborn - stopped working, and I can do NOTHING to begin the updating, what's wrong with this?