Application: kgpg (2.7.0)
KDE Platform Version: 4.8.00 (4.8.0 (Compiled from sources)
Qt Version: 4.8.0
Operating System: Linux 3.2.7 i686
Distribution (Platform): Gentoo Packages

-- Information about the crash:
I created a sigend message :
$>echo "Hi " | gpg --verbose --sign --recipient mickey@mou.se --armor --output signed.txt.asc
opened it in Dolphin (sigend.txt files was created) and opened it twice-. A dialog poped up to overwrite the file and then (or few seconds before ?) the crash occured.

-- Backtrace:
Application: KGpg (kgpg), signal: Segmentation fault
[KCrash Handler]
#7  QUrl::scheme (this=0x0) at io/qurl.cpp:4492
#8  0xb63b8bd2 in isLocalFile (url=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0/kdecore/io/kurl.cpp:906
#9  0x080e264c in operator= (s=<optimized out>, this=0xbfd7dfac) at /usr/include/qt4/QtCore/qstring.h:720
#10 KGpgExternalActions::startFolderEncode (this=0xa14e930) at /var/tmp/portage/kde-base/kgpg-4.8.0/work/kgpg-4.8.0/kgpgexternalactions.cpp:138
#11 0x080e2933 in KGpgExternalActions::decryptFile (this=0xa14e930) at /var/tmp/portage/kde-base/kgpg-4.8.0/work/kgpg-4.8.0/kgpgexternalactions.cpp:312
#12 0x080ba5b1 in KGpgApp::newInstance (this=0x9ecd3f8) at /var/tmp/portage/kde-base/kgpg-4.8.0/work/kgpg-4.8.0/kgpg.cpp:150
#13 0xb71de035 in KUniqueApplicationAdaptor::newInstance (this=0xa014f10, asn_id=..., args=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0/kdeui/kernel/kuniqueapplication.cpp:442
#14 0xb71de0f3 in KUniqueApplicationAdaptor::qt_metacall (this=0xa014f10, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfd7e378) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0_build/kdeui/kuniqueapplication_p.moc:81
#15 0xb62497e2 in QDBusConnectionPrivate::deliverCall (this=0x9ec7770, object=0xa014f10, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:947
#16 0xb624a9f7 in QDBusConnectionPrivate::activateCall (this=0x9ec7770, object=0xa014f10, flags=337, msg=...) at qdbusintegrator.cpp:857
#17 0xb624afc8 in QDBusConnectionPrivate::activateObject (this=0x9ec7770, node=..., msg=..., pathStartPos=16) at qdbusintegrator.cpp:1443
#18 0xb624b47a in QDBusActivateObjectEvent::placeMetaCall (this=0xa1b5820) at qdbusintegrator.cpp:1537
#19 0xb60da4b3 in QObject::event (this=0x9ecd3f8, e=0xa1b5820) at kernel/qobject.cpp:1195
#20 0xb60c47bc in QCoreApplication::event (this=0x9ecd3f8, e=0xa1b5820) at kernel/qcoreapplication.cpp:1688
#21 0xb667fc10 in QApplication::event (this=0x9ecd3f8, e=0xa1b5820) at kernel/qapplication.cpp:2532
#22 0xb667d56c in QApplicationPrivate::notify_helper (this=0x9ed5058, receiver=0x9ecd3f8, e=0xa1b5820) at kernel/qapplication.cpp:4550
#23 0xb668239e in QApplication::notify (this=0x9ecd3f8, receiver=0x9ecd3f8, e=0xa1b5820) at kernel/qapplication.cpp:3932
#24 0xb71d733b in KApplication::notify (this=0x9ecd3f8, receiver=0x9ecd3f8, event=0xa1b5820) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0/kdeui/kernel/kapplication.cpp:311
#25 0xb60c41a2 in QCoreApplication::notifyInternal (this=0x9ecd3f8, receiver=0x9ecd3f8, event=0xa1b5820) at kernel/qcoreapplication.cpp:876
#26 0xb60c7bdc in sendEvent (event=0xa1b5820, receiver=0x9ecd3f8) at kernel/qcoreapplication.h:231
#27 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9eaf5d0) at kernel/qcoreapplication.cpp:1500
#28 0xb60c7f4e in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393
#29 0xb60f6075 in sendPostedEvents () at kernel/qcoreapplication.h:236
#30 postEventSourceDispatch (s=0x9ed4e98) at kernel/qeventdispatcher_glib.cpp:279
#31 0xb55ee412 in g_main_dispatch (context=0x9ed68f0) at gmain.c:2441
#32 g_main_context_dispatch (context=0x9ed68f0) at gmain.c:3011
#33 0xb55eec28 in g_main_context_iterate (context=0x9ed68f0, block=1, dispatch=1, self=<optimized out>) at gmain.c:3089
#34 0xb55eee25 in g_main_context_iteration (context=0x9ed68f0, may_block=1) at gmain.c:3152
#35 0xb60f61ed in QEventDispatcherGlib::processEvents (this=0x9eaf1c0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#36 0xb6730306 in QGuiEventDispatcherGlib::processEvents (this=0x9eaf1c0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#37 0xb60c2f7a in QEventLoop::processEvents (this=0xbfd7ede4, flags=...) at kernel/qeventloop.cpp:149
#38 0xb60c3282 in QEventLoop::exec (this=0xbfd7ede4, flags=...) at kernel/qeventloop.cpp:204
#39 0xb60c8011 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#40 0xb667b448 in QApplication::exec () at kernel/qapplication.cpp:3811
#41 0x080bb256 in main (argc=) at /var/tmp/portage/kde-base/kgpg-4.8.0/work/kgpg-4.8.0/main.cpp:46

Reported using DrKonqi