Qt Designer -segmentation fault

[Setyo Nugroho <setyo.nugroho@web.de>]

Hi,

I got this message: "segmentation fault", every time I run the built
database program, either from rough C++ codes or using QDesigner or
using Qdesigner in combination with KDevelop. What does it mean?

I am sure the database connections can be made, since previewing from
QDesigner is successful. But the compiled program does not work
properly. Why is that? 

>From : apt-cache show libqt3-dev, I got this: 
"Package: libqt3-dev
Status: install ok installed
...."
"apt-cache show kdelibs-dev" produces this:
"Package: kdelibs-dev
Priority: optional
Section: devel ..". 
Which means that kdelibs-dev (pls correct me if 'm wrong). Instead of
kdelibs-dev, kdelibs4-dev is installed.

and "apt-cache show kdelibs4-dev"
"Package: kdelibs4-dev
Status: install ok installed ...
Conflicts: kdelibs-dev ..."

Could someone help me please?

Setyo Nugroho