I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06) in the native Mac OS X version provided by Homebrew. To reproduce the crash do the following:
1. Start with a blank document.
2. Draw an object, for example a rectangle.
3. Click the Fill/Stroke box in the top right of the Inkscape window.
The program crashes, with the following stack:
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VM Regions Near 0:
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__TEXT 0000000109827000-000000010983b000 [ 80K] r-x/rwx SM=COW /usr/local/Cellar/inkscape/0.92.2_1/bin/inkscape
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_platform.dylib 0x00007fff5aa28755 _platform_strcmp + 181
1 libinkscape_base.dylib 0x0000000109d78d54 Inkscape::Preferences::_getNode(Glib::ustring const&, bool) + 214
2 libinkscape_base.dylib 0x0000000109d7900a Inkscape::Preferences::_getRawValue(Glib::ustring const&, char const*&) + 70
3 libinkscape_base.dylib 0x0000000109d78fa4 Inkscape::Preferences::getEntry(Glib::ustring const&) + 34
4 libinkscape_base.dylib 0x0000000109a55305 Inkscape::Preferences::getBool(Glib::ustring const&, bool) + 37
5 libinkscape_base.dylib 0x0000000109c52bc4 Inkscape::UI::Widget::PrefCheckButton::init(Glib::ustring const&, Glib::ustring const&, bool) + 72
6 libinkscape_base.dylib 0x0000000109b5ceb2 Inkscape::UI::Dialog::InkscapePreferences::initPageIO() + 764
7 libinkscape_base.dylib 0x0000000109b65056 Inkscape::UI::Dialog::InkscapePreferences::InkscapePreferences() + 6640
8 libinkscape_base.dylib 0x0000000109aceeea Inkscape::UI::Dialog::InkscapePreferences::getInstance() + 28
9 libinkscape_base.dylib 0x0000000109acedda Inkscape::UI::Dialog::PanelDialog<Inkscape::UI::Dialog::Behavior::FloatingBehavior>* Inkscape::UI::Dialog::PanelDialog<Inkscape::UI::Dialog::Behavior::FloatingBehavior>::create<Inkscape::UI::Dialog::InkscapePreferences>() + 20
10 libinkscape_base.dylib 0x0000000109ace4bb Inkscape::UI::Dialog::Dialog* Inkscape::UI::Dialog::(anonymous namespace)::create<Inkscape::UI::Dialog::InkscapePreferences, Inkscape::UI::Dialog::Behavior::FloatingBehavior>() + 9
11 libinkscape_base.dylib 0x0000000109acec1d Inkscape::UI::Dialog::DialogManager::getDialog(unsigned int) + 83
12 libinkscape_base.dylib 0x0000000109acece0 Inkscape::UI::Dialog::DialogManager::showDialog(unsigned int, bool) + 104
13 libinkscape_base.dylib 0x0000000109dd0df5 Inkscape::ContextVerb::perform(SPAction*, void*) + 1291
14 libinkscape_base.dylib 0x00000001098a101a sigc::internal::signal_emit0<void, sigc::nil>::emit(sigc::internal::signal_impl*) + 106
15 libinkscape_base.dylib 0x000000010994cf8c sp_action_perform(SPAction*, void*) + 323
16 libinkscape_base.dylib 0x0000000109c7efb0 Inkscape::UI::Widget::StyleSwatch::on_click(_GdkEventButton*) + 102
17 libgtkmm-2.4.1.dylib 0x000000010b1b3f06 (anonymous namespace)::Widget_signal_button_press_event_callback(_GtkWidget*, _GdkEventButton*, void*) + 95
18 libgtk-quartz-2.0.0.dylib 0x000000010b52c6f8 _gtk_marshal_BOOLEAN__BOXED + 95
19 libgobject-2.0.0.dylib 0x000000010a91af8a g_closure_invoke + 198
20 libgobject-2.0.0.dylib 0x000000010a92e31d signal_emit_unlocked_R + 2028
21 libgobject-2.0.0.dylib 0x000000010a92ee67 g_signal_emit_valist + 1933
22 libgobject-2.0.0.dylib 0x000000010a92f4dc g_signal_emit + 120
23 libgtk-quartz-2.0.0.dylib 0x000000010b623260 gtk_widget_event_internal + 570
24 libgtk-quartz-2.0.0.dylib 0x000000010b52a9a7 gtk_propagate_event + 321
25 libgtk-quartz-2.0.0.dylib 0x000000010b52a5b2 gtk_main_do_event + 802
26 libgdk-quartz-2.0.0.dylib 0x000000010bb2e38b gdk_event_dispatch + 84
27 libglib-2.0.0.dylib 0x000000010ac8ee64 g_main_context_dispatch + 258
28 libglib-2.0.0.dylib 0x000000010ac8f162 g_main_context_iterate + 426
29 libglib-2.0.0.dylib 0x000000010ac8f3b7 g_main_loop_run + 207
30 libgtk-quartz-2.0.0.dylib 0x000000010b529fee gtk_main + 177
31 inkscape 0x0000000109833822 sp_main_gui(int, char const**) + 978
32 libdyld.dylib 0x00007fff5a7a8145 start + 1
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