UI not working since last weekend

[Bühl]

Thank you, guys, it's really almost as you described it.

I really found a second installation though i can't yet imagine why there is one. It's been installed to documents and settings (wtf) and the different logs are there too. The problem is though, that i still play the "old version", but the logs and UIsettings seem to refer only to the new one.
My first attempt was to start the new installation, but I got the massage that the client version is too old. So i tried to find the Launcher, but there is no Launcher, Setup files or aynthing like this, the installation is incomplete concerning these factors.
Is there a way to fix this or am i supposed to reinstall everything?
Gonna try myself, but I'd like to have your opinion on this.

Thanks Silat and Ixoa.