Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-21-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
I was trying to change the user image. I got an error message saying "failed to delete image".

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7faf7fc97780 (LWP 1791))]

Thread 3 (Thread 0x7faf61287700 (LWP 1794)):
#0  0x00007faf7c4028dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007faf79117ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf79118242 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf6ca7eae6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007faf7913e955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faf796366aa in start_thread (arg=0x7faf61287700) at pthread_create.c:333
#6  0x00007faf7c40deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7faf60879700 (LWP 1795)):
#0  0x00007faf7915c785 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007faf791172d7 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf79117de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf79117fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faf79118009 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faf7913e955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faf796366aa in start_thread (arg=0x7faf60879700) at pthread_create.c:333
#7  0x00007faf7c40deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7faf7fc97780 (LWP 1791)):
[KCrash Handler]
#6  0x0000000000000060 in ?? ()
#7  0x00007faf7ccd045f in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faf7722a55c in KDialogJobUiDelegate::Private::next() () from /usr/lib/x86_64-linux-gnu/libKF5JobWidgets.so.5
#9  0x00007faf7ccf373a in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007faf7daadb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007faf7dab3000 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007faf7ccc1c2b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007faf7ccc3c9b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007faf7cd1a843 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007faf79117c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007faf79117f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007faf79117fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007faf7cd1ac57 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007faf7ccbf3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007faf7ccc702c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x000000000040eebc in main ()

Reported using DrKonqi