Comment 11 for bug 651678

I am experiencing this too with Inkscape on Kubuntu Maverick, having a nonstandard icon theme. If I change the
gtk theme to something different from QtCurve or if I set the icon theme to Oxygen everything works ok.
The only combination which doesn't work for me is QtCurve+Faenza Icon theme.

Got almost exactly the same backtrace as Benjamin Wohlwend.

Interestingly the gtk-file icon exists in the Faenza icon theme, while oxygen does not have it.