Hello Evan, I am still getting crashes on another system, with backtrace Program received signal SIGSEGV, Segmentation fault. g_type_check_instance_cast (type_instance=0xffffffffe8006e00, iface_type=iface_type@entry=93824994480816) at /build/buildd/glib2.0-2.36.0/./gobject/gtype.c:4027 4027 /build/buildd/glib2.0-2.36.0/./gobject/gtype.c: No such file or directory. (gdb) bt #0 g_type_check_instance_cast (type_instance=0xffffffffe8006e00, iface_type=iface_type@entry=93824994480816) at /build/buildd/glib2.0-2.36.0/./gobject/gtype.c:4027 #1 0x00007fffe45f94b0 in alm_main_window_panel_init (self=0x555555b3ab40) at alm-cc.c:63 #2 0x00007ffff648795f in g_type_create_instance (type=) at /build/buildd/glib2.0-2.36.0/./gobject/gtype.c:1917 #3 0x00007ffff646c718 in g_object_constructor (type=, n_construct_properties=1, construct_params=0x555555b78110) at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:1855 #4 0x00007ffff646dce1 in g_object_newv (object_type=object_type@entry=93824997485168, n_parameters=n_parameters@entry=2, parameters=parameters@entry=0x555555b7dcf0) at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:1719 #5 0x00007ffff646e4d0 in g_object_new_valist (object_type=object_type@entry=93824997485168, first_property_name=first_property_name@entry=0x55555556019b "shell", var_args=var_args@entry=0x7fffffffca48) at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:1836 #6 0x00007ffff646e804 in g_object_new (object_type=93824997485168, first_property_name=0x55555556019b "shell") at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:1551 #7 0x000055555555de8c in ?? () #8 0x000055555555be47 in ?? () #9 0x00007ffff6467620 in g_closure_invoke (closure=0x555555931870, return_value=0x0, n_param_values=4, param_values=0x7fffffffce10, invocation_hint=0x7fffffffcdb0) at /build/buildd/glib2.0-2.36.0/./gobject/gclosure.c:777 #10 0x00007ffff6478f00 in signal_emit_unlocked_R (node=node@entry=0x555555931b20, detail=detail@entry=0, instance=instance@entry=0x555555a00000, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffce10) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3584 #11 0x00007ffff6480d11 in g_signal_emit_valist (instance=0x555555a00000, signal_id=, detail=0, var_args=var_args@entry=0x7fffffffd098) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3328 #12 0x00007ffff6480f92 in g_signal_emit (instance=, signal_id=, detail=) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3384 #13 0x000055555555ebbb in ?? () #14 0x00007ffff646a7a0 in g_cclosure_marshal_VOID__BOXEDv (closure=0x555555931ff0, return_value=, instance=, args=, marshal_data=, n_params=, param_types=0x555555768ea0) at /build/buildd/glib2.0-2.36.0/./gobject/gmarshal.c:1160 #15 0x00007ffff64678e7 in _g_closure_invoke_va (closure=0x555555931ff0, return_value=0x0, instance=0x555555a00000, args=0x7fffffffd518, n_params=1, param_types=0x555555768ea0) at /build/buildd/glib2.0-2.36.0/./gobject/gclosure.c:840 #16 0x00007ffff64802df in g_signal_emit_valist (instance=0x555555a00000, signal_id=, detail=0, var_args=var_args@entry=0x7fffffffd518) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3234 #17 0x00007ffff6480f92 in g_signal_emit (instance=, signal_id=, detail=) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3384 #18 0x000055555555ed94 in ?? () #19 0x00007ffff76a849c in _gtk_marshal_BOOLEAN__BOXED (closure=0x55555592d880, return_value=0x7fffffffd780, n_param_values=, param_values=0x7fffffffd830, invocation_hint=, marshal_data=) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkmarshalers.c:85 #20 0x00007ffff6467620 in g_closure_invoke (closure=0x55555592d880, return_value=0x7fffffffd780, n_param_values=2, param_values=0x7fffffffd830, invocation_hint=0x7fffffffd7d0) at /build/buildd/glib2.0-2.36.0/./gobject/gclosure.c:777 #21 0x00007ffff6478f00 in signal_emit_unlocked_R (node=node@entry=0x555555780120, detail=detail@entry=0, instance=instance@entry=0x555555a00000, emission_return=emission_return@entry=0x7fffffffd900, instance_and_params=instance_and_params@entry=0x7fffffffd830) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3584 #22 0x00007ffff6480996 in g_signal_emit_valist (instance=0x555555a00000, signal_id=, detail=0, var_args=var_args@entry=0x7fffffffda88) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3338 #23 0x00007ffff6480f92 in g_signal_emit (instance=instance@entry=0x555555a00000, signal_id=, detail=detail@entry=0) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3384 #24 0x00007ffff77d777e in gtk_widget_event_internal (widget=widget@entry=0x555555a00000, event=event@entry=0x555555b38180) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkwidget.c:6303 #25 0x00007ffff77d7b99 in gtk_widget_event (widget=widget@entry=0x555555a00000, event=event@entry=0x555555b38180) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkwidget.c:5960 #26 0x00007ffff76a644e in propagate_event_up (topmost=, event=, widget=0x555555a00000) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkmain.c:2403 #27 propagate_event (widget=, event=0x555555b38180, captured=, topmost=0x0) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkmain.c:2511 #28 0x00007ffff76a8185 in gtk_main_do_event (event=0x555555b38180) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkmain.c:1716 #29 0x00007ffff72d75e2 in gdk_event_source_dispatch (source=source@entry=0x55555578f490, callback=, user_data=) at /build/buildd/gtk+3.0-3.6.4/./gdk/x11/gdkeventsource.c:358 #30 0x00007ffff61a3f05 in g_main_dispatch (context=0x5555557a79b0) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3054 #31 g_main_context_dispatch (context=context@entry=0x5555557a79b0) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3630 #32 0x00007ffff61a4248 in g_main_context_iterate (context=context@entry=0x5555557a79b0, block=block@entry=1, dispatch=dispatch@entry=1, self=) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3701 #33 0x00007ffff61a4304 in g_main_context_iteration (context=0x5555557a79b0, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762 #34 0x00007ffff674452c in g_application_run (application=0x7fffe8006800, argc=, argv=0x7fffffffdeb8) at /build/buildd/glib2.0-2.36.0/./gio/gapplication.c:1623 #35 0x000055555555b2ba in main ()