(gdb) bt
#0  WaveformArea::SharedCtorInit() (this=0x55896890e170) at /home/konrad/dev/scopehal-cmake/src/glscopeclient/WaveformArea.cpp:113
#1  0x00005589673e354d in WaveformArea::WaveformArea(OscilloscopeChannel*, OscilloscopeWindow*)
    (this=0x55896890e170, channel=0x0, parent=0x5589683a1e00, __in_chrg=<optimized out>, __vtt_parm=<optimized out>)
    at /home/konrad/dev/scopehal-cmake/src/glscopeclient/WaveformArea.cpp:54
#2  0x00005589673b00b0 in OscilloscopeWindow::LoadUIConfiguration(YAML::Node const&, IDTable&) (this=0x5589683a1e00, node=..., table=...)
    at /home/konrad/dev/scopehal-cmake/src/glscopeclient/OscilloscopeWindow.cpp:775
#3  0x00005589673ad3bf in OscilloscopeWindow::DoFileOpen(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, bool, bool) (this=0x5589683a1e00, filename="/tmp/gls/example/example.scopesession", loadLayout=true, loadWaveform=true, reconnect=true)
    at /home/konrad/dev/scopehal-cmake/src/glscopeclient/OscilloscopeWindow.cpp:474
#4  0x00005589673acf29 in OscilloscopeWindow::OnFileOpen() (this=0x5589683a1e00)
    at /home/konrad/dev/scopehal-cmake/src/glscopeclient/OscilloscopeWindow.cpp:452
#5  0x00005589673cf2ca in sigc::bound_mem_functor0<void, OscilloscopeWindow>::operator()() const (this=0x5589683788c8)
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1991
#6  0x00005589673cd9a4 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, OscilloscopeWindow> >::operator()() const
    (this=0x5589683788c0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00005589673ca31e in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, OscilloscopeWindow>, void>::call_it(sigc::internal::slot_rep*) (rep=0x558968378890) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
#8  0x00007f7e047721f9 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () at /usr/lib/libglibmm-2.4.so.1
#9  0x00007f7e03a3861a in g_closure_invoke () at /usr/lib/libgobject-2.0.so.0
#10 0x00007f7e03a193a5 in  () at /usr/lib/libgobject-2.0.so.0
#11 0x00007f7e03a1cab9 in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#12 0x00007f7e03a1e6b0 in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#13 0x00007f7e04174f8b in gtk_widget_activate () at /usr/lib/libgtk-3.so.0
#14 0x00007f7e042aa69d in gtk_menu_shell_activate_item () at /usr/lib/libgtk-3.so.0
#15 0x00007f7e042ad1d4 in  () at /usr/lib/libgtk-3.so.0
#16 0x00007f7e0440d4ec in  () at /usr/lib/libgtk-3.so.0
#17 0x00007f7e03a1d0a0 in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#18 0x00007f7e03a1e6b0 in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#19 0x00007f7e04176ad6 in  () at /usr/lib/libgtk-3.so.0
#20 0x00007f7e042bcdd5 in  () at /usr/lib/libgtk-3.so.0
#21 0x00007f7e042c036c in gtk_main_do_event () at /usr/lib/libgtk-3.so.0
#22 0x00007f7e03fd0ed4 in  () at /usr/lib/libgdk-3.so.0
#23 0x00007f7e03f7dc24 in  () at /usr/lib/libgdk-3.so.0
#24 0x00007f7e0393d9be in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#25 0x00007f7e0393f831 in  () at /usr/lib/libglib-2.0.so.0
#26 0x00007f7e0393f871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#27 0x00007f7e042b97e3 in gtk_main_iteration_do () at /usr/lib/libgtk-3.so.0
#28 0x00007f7e04dbd51e in Gtk::Main::iteration(bool) () at /usr/lib/libgtkmm-3.0.so.1
#29 0x00005589673dc8b2 in ScopeApp::run(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)
    (this=0x558968120b30, fileToLoad="") at /home/konrad/dev/scopehal-cmake/src/glscopeclient/ScopeApp.cpp:70
#30 0x000055896740bfe8 in main(int, char**) (argc=1, argv=0x7ffe40568fc8) at /home/konrad/dev/scopehal-cmake/src/glscopeclient/main.cpp:176