After lobby error... FFXIV Launcher error!!

So I have been in a 4500 peeps queue for 3 hours, and got a lovely lobby error when I was 54th in said queue.

Now I can't log in to the game anymore :

FXIV Launcher Error
Unable to complete version update.
[30426][19900][740]

Anyone has had this happen to them?

Update : this launcher error doesn't happen if I disable directX 11 from the launcher options.

Switching back to the old launcher works also, at least for me.