Program received signal SIGSEGV, Segmentation fault. 0x00007ffff69b2018 in ARDOUR::Plugin::remove_preset (this=0x8b70b10, name="to_remove") at ../libs/ardour/plugin.cc:125 125 if (!p->user) { (gdb) bt #0 0x00007ffff69b2018 in ARDOUR::Plugin::remove_preset (this=0x8b70b10, name="to_remove") at ../libs/ardour/plugin.cc:125 #1 0x0000000000cd516c in PlugUIBase::save_plugin_setting (this=0x2031c50) at ../gtk2_ardour/plugin_ui.cc:623 #2 0x0000000000cd987a in sigc::bound_mem_functor0::operator() (this=0x3435318) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787 #3 0x0000000000cd90ba in sigc::adaptor_functor >::operator() (this=0x3435310) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #4 0x0000000000cd87bb in sigc::internal::slot_call0, void>::call_it ( rep=0x34352e0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103 #5 0x00000000006539bf in sigc::internal::signal_emit0::emit (impl=0x82c0f00) at /usr/include/sigc++-2.0/sigc++/signal.h:776 #6 0x0000000000656064 in sigc::signal0::emit (this=0x2032138) at /usr/include/sigc++-2.0/sigc++/signal.h:2673 #7 0x00000000006553c6 in sigc::signal0::operator() (this=0x2032138) at /usr/include/sigc++-2.0/sigc++/signal.h:2681 #8 0x0000000000651d8a in ArdourButton::on_button_release_event (this=0x20320b0, ev=0x916f490) at ../gtk2_ardour/ardour_button.cc:778 #9 0x00007ffff2a3e994 in Gtk::Widget_Class::button_release_event_callback(_GtkWidget*, _GdkEventButton*) () from /usr/lib/x86_64-linux-gnu/libgtkmm-2.4.so.1 #10 0x00007ffff3d37815 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #11 0x00007ffff47643b8 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 #12 0x00007ffff4775afb in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 #13 0x00007ffff477d6f9 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 #14 0x00007ffff477dce2 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 #15 0x00007ffff3e47684 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #16 0x00007ffff3d35fc4 in gtk_propagate_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #17 0x00007ffff3d3637b in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #18 0x00007ffff39b03ec in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0 #19 0x00007ffff428fe04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #20 0x00007ffff4290048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007ffff429030a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #22 0x00007ffff3d35447 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #23 0x00007ffff759455a in Gtkmm2ext::UI::run (this=0x1ae2ef0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:286 #24 0x0000000000afeb6f in main (argc=1, argv=0x7fffffffd758) at ../gtk2_ardour/main.cc:400