First of all, it doesnt work for me. I get the message that ro2 detected a problem and has to be closed upon start.
HOWEVER, and I hope that helps the developers, my brothers version does run without problems.
Background:
My brother installed the german version via steam, uninstalled it, and installed the english version after he switched his complete steamsettings to english. (He wanted the gory version for the price of reinstalling ALL of his steamgames) The update followed, he can play without problems.
I installed the english version from the beginning by changing the properties of ro2 on steam to english. The rest of my steamgames is still german. However, without me approving, Steam automatically "patched" my version to german again. I could play for the last two days (server browser was a problem for me and my brother) but when the small update hit, it was goodbye RO2 for me...no more able to start the game.
Please fix it asap.