Application: systemsettings5 (5.4.0)

Qt Version: 5.5.0
Operating System: Linux 4.1.6-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- removing x-ruby app icon from systemsettings

- x-ruby icon added manually to make ruby scripts launch in gvim; it would not launch previously

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa04fbb37c0 (LWP 723))]

Thread 2 (Thread 0x7fa03c309700 (LWP 725)):
#0  0x00007fa04b8e018d in poll () from /usr/lib/libc.so.6
#1  0x00007fa04867b9f2 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007fa04867d56f in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007fa03dc35ca9 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fa04bfe0a9e in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007fa047dfa4a4 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007fa04b8e912d in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7fa04fbb37c0 (LWP 723)):
[KCrash Handler]
#5  0x00007fa04c0723a8 in operator==(QString const&, QString const&) () from /usr/lib/libQt5Core.so.5
#6  0x00007fa04c24fd04 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007fa04c24353a in QMimeType::comment() const () from /usr/lib/libQt5Core.so.5
#8  0x00007fa02c1d5786 in ?? () from /usr/lib/qt/plugins/kcm_filetypes.so
#9  0x00007fa02c1d64c2 in ?? () from /usr/lib/qt/plugins/kcm_filetypes.so
#10 0x00007fa02c1cc762 in ?? () from /usr/lib/qt/plugins/kcm_filetypes.so
#11 0x00007fa02c1c53b1 in ?? () from /usr/lib/qt/plugins/kcm_filetypes.so
#12 0x00007fa04c1effea in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#13 0x00007fa04d2345a5 in KSycoca::databaseChanged(QStringList const&) () from /usr/lib/libKF5Service.so.5
#14 0x00007fa04d2215ed in KSycoca::notifyDatabaseChanged(QStringList const&) () from /usr/lib/libKF5Service.so.5
#15 0x00007fa04d234e0a in KSycoca::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libKF5Service.so.5
#16 0x00007fa04cb2b293 in ?? () from /usr/lib/libQt5DBus.so.5
#17 0x00007fa04c1f0eb1 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#18 0x00007fa04dd3100c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#19 0x00007fa04dd364e6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#20 0x00007fa04c1c189b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#21 0x00007fa04c1c3c96 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#22 0x00007fa04c217e33 in ?? () from /usr/lib/libQt5Core.so.5
#23 0x00007fa0478dd9fd in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0x00007fa0478ddce0 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0x00007fa0478ddd8c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0x00007fa04c21823f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#27 0x00007fa04c1bf26a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#28 0x00007fa04c1c720c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#29 0x000000000040edeb in main ()

Reported using DrKonqi