Application: amarok (2.3.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2) (Compiled from sources)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
amarok , qt designer and knotifier (maybe more) dont work with my "old" account after upgrade to 10.04. 
If I login with guest account , the applications run. I already removed .kde/share/apps/amarok.
Error message on console:
 <unknown program name>(2574)/: Communication problem with  "amarok" , it probably crashed.
Error message was:  "org.freedesktop.DBus.Error.ServiceUnknown" : " "The name org.kde.amarok was not provided by any .service files" .

It looks for me that some old (hidden) configuration files disturbed the transfer from 9.10 to 10.04 on the qt level.
I should generate two bug reports or send the report as qt related, but I believe the symptoms are connected.

The strange thing is , that this seems related to my old user account.

dd~$ /usr/share/qt4/bin/designer
Error while reparenting!
QMetaProperty::read: Unable to handle unregistered datatype 'QList<QChar>' for property 'KCharSelect::displayedChars'
QMetaProperty::read: Unable to handle unregistered datatype 'KUrl' for property 'KUrlRequester::url'
QMetaProperty::read: Unable to handle unregistered datatype 'ShortcutTypes' for property 'KKeySequenceWidget::checkForConflictsAgainst'Enchant dict for "en_US" 0xa182460 
QMetaProperty::read: Unable to handle unregistered datatype 'KUrl' for property 'KUrlRequester::url'
QMetaProperty::read: Unable to handle unregistered datatype 'QList<QColor>' for property 'KColorCombo::colors'
Segmentation fault

thank you
dirk

The crash can be reproduced every time.

 -- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77a7720 (LWP 2575))]

Thread 2 (Thread 0xb1df0b70 (LWP 2578)):
#0  0x003a1422 in __kernel_vsyscall ()
#1  0x00886b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x044f9502 in ?? () from /usr/lib/libpulse.so.0
#3  0x044e5a59 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#4  0x044e7a13 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#5  0x044e7ae4 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#6  0x044f92a3 in ?? () from /usr/lib/libpulse.so.0
#7  0x046d2e02 in ?? () from /usr/lib/libpulsecommon-0.9.21.so
#8  0x0092696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0x00894a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77a7720 (LWP 2575)):
[KCrash Handler]
#6  0x02c16e5c in ?? () from /usr/lib/libasound.so.2
#7  0x02bd3e9e in snd_pcm_close () from /usr/lib/libasound.so.2
#8  0x02dc1662 in ?? () from /usr/lib/gstreamer-0.10/libgstalsa.so
#9  0x08870512 in ?? () from /usr/lib/libgstaudio-0.10.so.0
#10 0x088606f0 in gst_ring_buffer_close_device () from /usr/lib/libgstaudio-0.10.so.0
#11 0x0886ae42 in ?? () from /usr/lib/libgstaudio-0.10.so.0
#12 0x045ca435 in gst_element_change_state (element=0x9b62440, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstelement.c:2548
#13 0x045cd928 in gst_element_set_state_func (element=0x9b62440, state=GST_STATE_NULL) at gstelement.c:2504
#14 0x045c97f0 in gst_element_set_state (element=0x9b62440, state=GST_STATE_NULL) at gstelement.c:2405
#15 0x045b9827 in gst_bin_element_set_state (element=0x9b28198, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstbin.c:2118
#16 gst_bin_change_state_func (element=0x9b28198, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstbin.c:2417
#17 0x045ca435 in gst_element_change_state (element=0x9b28198, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstelement.c:2548
#18 0x045cd928 in gst_element_set_state_func (element=0x9b28198, state=GST_STATE_NULL) at gstelement.c:2504
#19 0x045c97f0 in gst_element_set_state (element=0x9b28198, state=GST_STATE_NULL) at gstelement.c:2405
#20 0x045b9827 in gst_bin_element_set_state (element=0x9b27170, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstbin.c:2118
#21 gst_bin_change_state_func (element=0x9b27170, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstbin.c:2417
#22 0x02db311e in gst_switch_sink_change_state (element=0x9b27170, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstswitchsink.c:255
#23 0x02daff56 in gst_gconf_audio_sink_change_state (element=0x9b27170, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstgconfaudiosink.c:298
#24 0x045ca435 in gst_element_change_state (element=0x9b27170, transition=GST_STATE_CHANGE_READY_TO_NULL) at gstelement.c:2548
#25 0x045cd928 in gst_element_set_state_func (element=0x9b27170, state=GST_STATE_NULL) at gstelement.c:2504
#26 0x045c97f0 in gst_element_set_state (element=0x9b27170, state=GST_STATE_NULL) at gstelement.c:2405
#27 0x02d3fe1c in Phonon::Gstreamer::AudioOutput::setOutputDevice (this=0x99885b8, newDevice=...) at ../../gstreamer/audiooutput.cpp:217
#28 0x05d5d621 in callSetOutputDevice (this=0x984ba78) at ../3rdparty/phonon/phonon/audiooutput.cpp:67
#29 Phonon::AudioOutputPrivate::setupBackendObject (this=0x984ba78) at ../3rdparty/phonon/phonon/audiooutput.cpp:281
#30 0x05d5dd22 in Phonon::AudioOutputPrivate::createBackendObject (this=0x984ba78) at ../3rdparty/phonon/phonon/audiooutput.cpp:124
#31 0x05d5a284 in Phonon::AudioOutputPrivate::init (this=0x984ba78, c=Phonon::MusicCategory) at ../3rdparty/phonon/phonon/audiooutput.cpp:106
#32 0x05d5a929 in AudioOutput (this=0x996bed8, category=Phonon::MusicCategory, parent=0x9845160) at ../3rdparty/phonon/phonon/audiooutput.cpp:76
#33 0x0126b88e in EngineController::initializePhonon (this=0x9845160) at ../../src/EngineController.cpp:122
#34 0x0126dac2 in EngineController::qt_metacall (this=0x9845160, _c=QMetaObject::InvokeMetaMethod, _id=21, _a=0xbfa4e3ac) at ./EngineController.moc:147
#35 0x0050fc9a in QMetaObject::metacall (object=0x9845160, cl=9561024, idx=26, argv=0xbfa4e3ac) at kernel/qmetaobject.cpp:237
#36 0x00513ac5 in QMetaMethod::invoke (this=0xbfa4e53c, object=0x9845160, connectionType=Qt::DirectConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., 
    val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1533
#37 0x005140cf in QMetaObject::invokeMethod (obj=0x9845160, member=0x148c0c4 "initializePhonon", type=Qt::DirectConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., 
    val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1113
#38 0x0136eadb in QMetaObject::invokeMethod (this=0x9845d70) at /usr/include/qt4/QtCore/qobjectdefs.h:398
#39 Amarok::DefaultApplicationController::initEngineController (this=0x9845d70) at ../../src/statemanagement/DefaultApplicationController.cpp:90
#40 0x0136eb12 in Amarok::DefaultApplicationController::start (this=0x9845d70) at ../../src/statemanagement/DefaultApplicationController.cpp:47
#41 0x0124ead0 in App::continueInit (this=0xbfa4eae8) at ../../src/App.cpp:670
#42 0x012534e9 in App (this=0xbfa4eae8) at ../../src/App.cpp:212
#43 0x0804fffc in main (argc=1, argv=0xbfa4f364) at ../../src/main.cpp:235

This bug may be a duplicate of or related to bug 232068.

Possible duplicates by query: bug 238188, bug 237950, bug 237862, bug 237744, bug 237538.

Reported using DrKonqi