What's the correct way to make QT4/KDE4 apps use my GTK theme?

I tried going to Computer -> System Settings -> Appearance and setting the widget style to GTK+ (instead of the default oxygen) but my computer crashes. If I load xterm from kdm and try to run kwin for example, I get the following error message.
"QGtkStyle cannot be used together with the GTK_Qt engine."
and then it segfaults.
http://wiki.archlinux.org/index.php/Uni … d_GTK_apps
This page says to use QGtkStyle, which comes bundled with QT 4.5. I assume that is what I do with the previous procedure, but obviously that is giving me problems. Any ideas?
Fyi, this just started happening tonight when I rebooted my computer. I've had it set to GTK+ for a while and my KDE apps rendered with my GTK theme, but when I rebooted it segfaulted loading the desktop and I haven't been able to get it to work since. Any ideas?

Maybe you should try typing "qtconfig" in the terminal. You can choose GTK+ then. Works for me. I didn't install anything special except the QT applications I use (including QTcreator), so I think "qtconfig" should be available when you have QT installed.
Also look out for a ".kde" directory (?) in your home folder (even when you don't use KDE it might be that you have it). It could be that you've got some contradictory settings in some configuration files that are read when QT apps are started. I'm not sure on this one, though.

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