Hello Zimmer,

thank you very much for this hint. I found the package with the libpng.so.3 and installed it. Now the 4.4.3-libraries are working. Great!
Do you have an additional trick for me if it's possible to make these libraries use the gtkstyle-plugin? I compiled the plugin and modified the plugin path in the qt-conf and tried starting with "googleearth -style GTK+" or "googleearth -style GTK" with no success...

Sven