Yes, tried all of that. It's like my steam client doesn't see the other files for the localization and thinks there is only one choice, seems like that's why when I'm choosing other language nothing is happening.
Steam restart does not forcing the update because all the files is up to date, they just not the ones I need. And for the same reason ksp runs without any complaints for updates. Oh well, I guess I'm just gonna live with that for now. I'm playing on the english version anyway, just wanted to test this localization and see what's new. Maybe when the full update is out it's gonna sort itself out. Thanks for your time.