qmake_image_collection.cpp: 16_connect_creating.png 16_exit.png

/usr/bin/uic3 -embed ../bin/siouk 16_connect_creating.png 16_exit.png -o qmake_image_collection.cpp

So it gives a compiling. I don't know why this happens but it seems related to QT itself, not to KDevelop.
The compilation error is generated because in order to embed an image the Qt3 uic is used (I don't know why), but I guess that through the Qt config files Qt4 knows to add the right code for Qt4.
This means however, that you need to add the Qt3 supprt in Qt4.
Add :
QT += qt3support
to your pro file, qmake it, and run make.
It should compile.