Thread 1 "thunar" received signal SIGSEGV, Segmentation fault. 0x00007ffff7304731 in g_type_check_instance_cast () from /lib/x86_64-linux-gnu/libgobject-2.0.so.0 (gdb) bt full #0 0x00007ffff7304731 in g_type_check_instance_cast () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #1 0x00005555556101f9 in thunar_window_install_sidepane Python Exception No type named TypeNode.: (window=0x555555904260, type=) at thunar-window.c:2062 context = __func__ = "thunar_window_install_sidepane" #2 0x0000555555610263 in thunar_window_action_tree_changed (action=, window=0x555555904260) at thunar-window.c:2724 other_action = Python Exception No type named TypeNode.: type = #3 0x00007ffff72df6e2 in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #4 0x00007ffff72f3544 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #5 0x00007ffff72fc327 in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #6 0x00007ffff72fc9b3 in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #7 0x00007ffff78af8a5 in _gtk_action_emit_activate (action=0x5555559602a0) at ../../../../gtk/deprecated/gtkaction.c:909 group = 0x5555558c8560 #8 0x00007ffff78afe71 in closure_accel_activate (n_param_values=, param_values=, invocation_hint=, marshal_data=, return_value=0x7fffffffd510, c--Type for more, q to quit, c to continue without paging--c losure=0x555555a51e90) at ../../../../gtk/deprecated/gtkaction.c:1865 #9 0x00007ffff78afe71 in closure_accel_activate (closure=0x555555a51e90, return_value=0x7fffffffd510, n_param_values=, param_values=, invocation_hint=, marshal_data=) at ../../../../gtk/deprecated/gtkaction.c:1856 #10 0x00007ffff72df6e2 in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #11 0x00007ffff72f3544 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #12 0x00007ffff72fb99e in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #13 0x00007ffff72fc9b3 in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #14 0x00007ffff7908241 in gtk_accel_group_activate (accel_group=0x5555559d86a0, accel_quark=accel_quark@entry=2035, acceleratable=acceleratable@entry=0x555555904260, accel_key=accel_key@entry=101, accel_mods=accel_mods@entry=GDK_CONTROL_MASK) at ../../../../gtk/gtkaccelgroup.c:910 was_handled = 0 __func__ = "gtk_accel_group_activate" #15 0x00007ffff7909ba5 in gtk_accel_groups_activate (object=object@entry=0x555555904260, accel_key=101, accel_mods=GDK_CONTROL_MASK) at ../../../../gtk/gtkaccelgroup.c:948 accel_name = 0x555555d26910 "[gtk+] do_updates_idle" accel_quark = 2035 slist = 0x555555960930 = {0x5555559d86a0} __func__ = "gtk_accel_groups_activate" #16 0x00007ffff7bad772 in gtk_window_activate_key (window=window@entry=0x555555904260, event=event@entry=0x555555cc8940) at ../../../../gtk/gtkwindow.c:12193 key_hash = found_entry = 0x555555a07b50 enable_accels = 1 enable_mnemonics = 1 __func__ = "gtk_window_activate_key" #17 0x00007ffff7bada56 in gtk_window_key_press_event (widget=0x555555904260, event=0x555555cc8940) at ../../../../gtk/gtkwindow.c:8388 window = 0x555555904260 handled = 0 #18 0x00007ffff7bdd7ff in _gtk_marshal_BOOLEAN__BOXEDv (closure=0x555555741130, return_value=0x7fffffffdb10, instance=, args=, marshal_data=, n_params=, param_types=0x555555741160) at gtkmarshalers.c:129 cc = 0x555555741130 data1 = 0x555555904260 data2 = callback = 0x7ffff7bada40 v_return = arg0 = 0x555555cc8940 args_copy = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fffffffdcc0, reg_save_area = 0x7fffffffdc00}} __func__ = "_gtk_marshal_BOOLEAN__BOXEDv" #19 0x00007ffff72df936 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #20 0x00007ffff72fbdcb in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #21 0x00007ffff72fc9b3 in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #22 0x00007ffff7b87e53 in gtk_widget_event_internal (event=0x555555cc8940, widget=0x555555904260) at ../../../../gtk/gtkwidget.c:7789 signal_num = return_val = handled = 0 __func__ = "gtk_widget_event_internal" __func__ = "gtk_widget_event_internal" #23 0x00007ffff7b87e53 in gtk_widget_event_internal (widget=0x555555904260, event=0x555555cc8940) at ../../../../gtk/gtkwidget.c:7658 __func__ = "gtk_widget_event_internal" #24 0x00007ffff7a43a8f in propagate_event (widget=0x555555904260, event=0x555555cc8940, captured=, topmost=0x0) at ../../../../gtk/gtkmain.c:2687 window = 0x555555904260 handled_event = #25 0x00007ffff7a45c2b in gtk_main_do_event (event=0x555555cc8940) at ../../../../gtk/gtkmain.c:1917 grab_widget = 0x555555904260 window_group = 0x7fffe8019f10 rewritten_event = device = tmp_list = event_widget = 0x555555904260 topmost_widget = __func__ = "gtk_main_do_event" __func__ = "gtk_main_do_event" #26 0x00007ffff7a45c2b in gtk_main_do_event (event=) at ../../../../gtk/gtkmain.c:1687 __func__ = "gtk_main_do_event" #27 0x00007ffff772ff19 in _gdk_event_emit (event=event@entry=0x555555cc8940) at ../../../../gdk/gdkevents.c:73 #28 0x00007ffff7762ff6 in gdk_event_source_dispatch (source=, callback=, user_data=) at ../../../../../gdk/x11/gdkeventsource.c:367 display = event = 0x555555cc8940 #29 0x00007ffff71f484d in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #30 0x00007ffff71f4ad0 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #31 0x00007ffff71f4b73 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #32 0x00007ffff7407b05 in g_application_run () at /lib/x86_64-linux-gnu/libgio-2.0.so.0 #33 0x0000555555582619 in main (argc=1, argv=0x7fffffffe068) at main.c:86 application = 0x5555556a80f0 error = 0x0