I was in a dungeon today, I got an error 90000 (duty finder disconnect). You said it was resolved... guess not entirely but it's okay stuff happens. When I tried to reconnect I had the start error 2002. I rebooted my system just in case to clear in-memory cache and whatnot. Now when I start my ffxivboot.exe I get this message :

A system error has occured : -2146697211.
http://frontier.ffxiv.com/arr_win/index.html?rc_lang=en-us

And then it crashes. I can't launch the game anymore.