error opening icons with KDE

[Christian Meesters]

Hoi,

just migrated an application of mine to an SuSE-platform (first time I tried 
it with KDE) and when I try to open an wx.MessageDialog I get errors like 
these and no icon gets displayed:

(python:6539): Gtk-WARNING **: Error loading icon: Failed to load image 
'/opt/kde3/share/icons/crystalsvg/22x22/actions/button_ok.png': Transformed 
PNG has zero width or height.

But all such buttons are on the place wx, respectively Gtk, is looking for. 
And they are ok. My wxPython-application is the only one having trouble 
to open these buttons.

Any idea what might cause this error and how to solve it?

TIA
Cheers
Christian