I'll tell the whole tale, as I think it is the patching that went wrong.

Updating:
When I tried to update the game (ie. the patch the 19 of oct.) today, wednesday, my patcher froze at processing packs. The first time it did it I closed it after 5min of a white window. The two following tries I was thrown back to the verification before patching with the note that Connection had been lost. The fourth time I tried I got through to downloading the files.
At 100,95mb the patcher froze again. I hoped that it would restart and left it to think. It finished after a few minutes and loaded the game.

The Crash:
Now when I try to login I get this crash message

I'm quite sure it has something to do with the patching (it seem to be the exe file that is something wrong with).. Taken the whole messy affair into consideration with patching..