[Wine] Can't install games in Steam, it crashes.

[Fazer]

When I try to install a game (purchased on Windows) in Steam by selecting the title and clicking "Install", it doesn't do anything for a couple of seconds and then crashes.

Here's a log from a console: http://codepad.org/n89JWRFb

I'm on Kubuntu 10.04, Wine 1.2-rc1.