Problem with GTK themes on KDE ...
 

Hii, well, i use Firefox on my KDE 3.2.0 and I installed some new GTK themes like Plastig and ThinGeramik ... Butt I can't get them to work, when I look into X log, I get this warning message:

(firefox-bin:825): Gtk-WARNING **: Unable to locate theme engine in module_path: "qtpixmap",

Can anyone help me?! :)

I had the same problem.. cured it finally.. after 3 hours of scouring the whole of Google and linuxquestions and the answer is.....
run the following command
gtk-query-immodules-2.0
check for the module paths mentioned there
my module path was in /lib/gtk-2.0/ and NOT in /usr/lib/gtk-2.0

all my engines were installed in the second path and therefore no matter what I did the theme engines were never found
Just linked all the files to the new location and voila... IT WORKS!