Guild Wars 2

Ive just downloaded the December 1st patch, and when I press “Play”, the launcher just closes and never opens the game.

First instinct? Run the repair program. Thats broken as well. I open it, and it begins to repair the data archive, but just stops at a certain point and does nothing. If I click it or try to move the window at all, it just crashes.

EDIT: Just tried the old 32-bit client to see if I can get in via that. When I press Play, it just crashes instantly.

how to change 64-bit client on 32-bit?