I just restarted the client and did the upgrade.
Now the whole program doesn't do anything. (Maybe some background stuff, but at least nothing visible)
I don't even get the login screen.
Is this a known problem for which I just have to wait for the solution?
Do I need to do a reinstall? ( although there were problems with that in another thread )
If you need some logs, records or something similar, please explain how to get them and I'll provide them.