Version:            (using KDE 4.1.96)
OS:                Linux
Installed from:    Compiled From Sources

I compiled networkmanager-kde4 from sources.
The plasmoid starts with no problem and probes for wifi networks successfully, but when I try to configure the module so it can connect to my network (WEP encrypted) and then press ok, the configuration module crashes. The plasmoid keeps on running with no problem, but this problem makes it impossible to configure.

Here are the details given when the application crashed :

The application Module de Configuration de KDE (kcmshell4) crashed and caused the signal 11 (SIGSEGV).

more details :

Application : Module de Configuration de KDE (kcmshell4), signal SIGSEGV
0x00007fc446c5ccb0 in nanosleep () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7fc449d10750 (LWP 5996))]

Thread 1 (Thread 0x7fc449d10750 (LWP 5996)):
[KCrash Handler]
#5  0x00007fc43b5173dc in WepWidget::writeConfig (this=0x8ac0a0) at /home/sidney/Téléchargés/networkmanager/networkmanager/libs/ui/../storage/settings/802-11-wireless-security.h:71
#6  0x00007fc43b515a47 in Wireless80211SecurityWidget::writeConfig (this=<value optimized out>)
    at /home/sidney/Téléchargés/networkmanager/networkmanager/libs/ui/security/802_11_wireless_security_widget.cpp:162
#7  0x00007fc43b51b88b in ConnectionPreferences::save (this=0x88fe40) at /home/sidney/Téléchargés/networkmanager/networkmanager/libs/ui/connectionprefs.cpp:84
#8  0x00007fc43b51f34c in ConnectionEditor::addConnection (this=0x7c8cc0, useDefaults=<value optimized out>, type=Knm::Connection::Wireless, otherArgs=@0x7fff51d4bc40)
    at /home/sidney/Téléchargés/networkmanager/networkmanager/libs/ui/connectioneditor.cpp:102
#9  0x00007fc43b72f5bb in ManageConnectionWidget::addClicked (this=0x76eaa0) at /home/sidney/Téléchargés/networkmanager/networkmanager/settings/config/manageconnectionwidget.cpp:194
#10 0x00007fc43b732a30 in ManageConnectionWidget::qt_metacall (this=0x76eaa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff51d4bd80)
    at /home/sidney/Téléchargés/networkmanager/networkmanager/settings/config/manageconnectionwidget.moc:80
#11 0x00007fc44876c454 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#12 0x00007fc447daa5e7 in QAbstractButton::clicked(bool) () from /usr/lib64/libQtGui.so.4
#13 0x00007fc447b2ea7b in ?? () from /usr/lib64/libQtGui.so.4
#14 0x00007fc447b305f2 in ?? () from /usr/lib64/libQtGui.so.4
#15 0x00007fc447b30845 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQtGui.so.4
#16 0x00007fc447877799 in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#17 0x00007fc4478251bd in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#18 0x00007fc44782d7fa in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#19 0x00007fc4492f8afb in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#20 0x00007fc448758091 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#21 0x00007fc44782cb98 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib64/libQtGui.so.4
#22 0x00007fc447891049 in ?? () from /usr/lib64/libQtGui.so.4
#23 0x00007fc44788fa67 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#24 0x00007fc4478b6204 in ?? () from /usr/lib64/libQtGui.so.4
#25 0x00007fc4436c20db in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#26 0x00007fc4436c58ad in ?? () from /usr/lib64/libglib-2.0.so.0
#27 0x00007fc4436c5a6b in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#28 0x00007fc4487804ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#29 0x00007fc4478b59af in ?? () from /usr/lib64/libQtGui.so.4
#30 0x00007fc4487569a2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#31 0x00007fc448756b2d in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#32 0x00007fc447c3d145 in QDialog::exec() () from /usr/lib64/libQtGui.so.4
#33 0x00007fc44992d19f in kdemain () from /usr/lib64/libkdeinit4_kcmshell4.so
#34 0x00007fc446bd9586 in __libc_start_main () from /lib64/libc.so.6
#35 0x0000000000400739 in _start ()

I hope this helps.