#0  0x00007f1046e0fc20 in calf_plugins::lv2_instance::lv2_instance (_module=0x562e44215208, this=0x562e41be1790) at ./calf/lv2wrap.h:58
  [Error: lv2wrap.h was not found in source tree]
#1  calf_plugins::lv2_wrapper<calf_plugins::filter_audio_module>::cb_instantiate (Descriptor=<optimized out>, sample_rate=96000, bundle_path=<optimized out>, features=0x562e45597210) at ./calf/lv2wrap.h:247
  [Error: lv2wrap.h was not found in source tree]
#2  0x00007f10dd3ade7b in lilv_plugin_instantiate (plugin=plugin@entry=0x562e41803a80, sample_rate=96000, features=<optimized out>) at ../src/instance.c:66
  [Error: instance.c was not found in source tree]
#3  0x00007f10dc8f5f25 in ARDOUR::LV2Plugin::init (this=this@entry=0x562e467b0000, c_plugin=c_plugin@entry=0x562e41803a80, rate=rate@entry=96000) at ../libs/ardour/lv2_plugin.cc:557
  552: 	if (_has_state_interface) {
  553: 		// Create a non-threaded worker for use by state restore
  554: 		_state_worker = new Worker(this, ring_size, false);
  555: 	}
  556: 
  557: 	_impl->instance = lilv_plugin_instantiate(plugin, rate, _features);
  558: 	_impl->name     = lilv_plugin_get_name(plugin);
  559: 	_impl->author   = lilv_plugin_get_author_name(plugin);
  560: 
  561: 	if (_impl->instance == 0) {
  562: 		error << _("LV2: Failed to instantiate plugin ") << uri() << endmsg;
#4  0x00007f10dc8f71e7 in ARDOUR::LV2Plugin::LV2Plugin (this=0x562e467b0000, engine=..., session=..., c_plugin=0x562e41803a80, rate=96000) at ../libs/ardour/lv2_plugin.cc:369
  364: 	, _patch_port_in_index((uint32_t)-1)
  365: 	, _patch_port_out_index((uint32_t)-1)
  366: 	, _uri_map(URIMap::instance())
  367: 	, _no_sample_accurate_ctrl (false)
  368: {
  369: 	init(c_plugin, rate);
  370: }
  371: 
  372: LV2Plugin::LV2Plugin (const LV2Plugin& other)
  373: 	: Plugin (other)
  374: 	, Workee ()
#5  0x00007f10dc8f7367 in ARDOUR::LV2PluginInfo::load (this=0x562e41a9c090, session=...) at ../libs/ardour/lv2_plugin.cc:3359
  3354: 		const LilvPlugins* plugins = lilv_world_get_all_plugins(_world.world);
  3355: 		LilvNode* uri = lilv_new_uri(_world.world, _plugin_uri);
  3356: 		if (!uri) { throw failed_constructor(); }
  3357: 		const LilvPlugin* lp = lilv_plugins_get_by_uri(plugins, uri);
  3358: 		if (!lp) { throw failed_constructor(); }
  3359: 		plugin.reset(new LV2Plugin(session.engine(), session, lp, session.frame_rate()));
  3360: 		lilv_node_free(uri);
  3361: 		plugin->set_info(PluginInfoPtr(shared_from_this ()));
  3362: 		return plugin;
  3363: 	} catch (failed_constructor& err) {
  3364: 		return PluginPtr((Plugin*)0);
#6  0x0000562e3e4b6831 in PluginSelector::load_plugin (pi=..., this=0x562e41d95060) at ../gtk2_ardour/plugin_selector.cc:551
  546: {
  547: 	if (_session == 0) {
  548: 		return PluginPtr();
  549: 	}
  550: 
  551: 	return pi->load (*_session);
  552: }
  553: 
  554: void
  555: PluginSelector::btn_add_clicked()
  556: {
#7  PluginSelector::plugin_chosen_from_menu (this=0x562e41d95060, pi=...) at ../gtk2_ardour/plugin_selector.cc:951
  946: }
  947: 
  948: void
  949: PluginSelector::plugin_chosen_from_menu (const PluginInfoPtr& pi)
  950: {
  951: 	PluginPtr p = load_plugin (pi);
  952: 
  953: 	if (p && interested_object) {
  954: 		SelectedPlugins plugins;
  955: 		plugins.push_back (p);
  956: 		interested_object->use_plugins (plugins);
#8  0x00007f10da8af548 in sigc::slot0<void>::operator() (this=0x562e41dc4b38) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:513
  [Error: slot.h was not found in source tree]
#9  Glib::SignalProxyNormal::slot0_void_callback (self=<optimized out>, data=0x562e41dc4b30) at signalproxy.cc:103
  [Error: signalproxy.cc was not found in source tree]
#10 0x00007f10dd4f6b4d in g_closure_invoke (closure=0x562e41dc4c30, return_value=0x0, n_param_values=1, param_values=0x7fff164f80d0, invocation_hint=0x7fff164f8050) at ../../../../gobject/gclosure.c:810
  [Error: gclosure.c was not found in source tree]
#11 0x00007f10dd5093ce in signal_emit_unlocked_R (node=node@entry=0x562e40ec0d00, detail=detail@entry=0, instance=instance@entry=0x562e417b4020, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff164f80d0) at ../../../../gobject/gsignal.c:3705
  [Error: gsignal.c was not found in source tree]
#12 0x00007f10dd512862 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff164f8280) at ../../../../gobject/gsignal.c:3391
  [Error: gsignal.c was not found in source tree]
#13 0x00007f10dd512eaf in g_signal_emit (instance=instance@entry=0x562e417b4020, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#14 0x00007f10da2519f6 in IA__gtk_widget_activate (widget=widget@entry=0x562e417b4020) at ./gtk/gtkwidget.c:5048
  [Error: gtkwidget.c was not found in source tree]
#15 0x00007f10da14e59d in IA__gtk_menu_shell_activate_item (menu_shell=0x562e41dd79b0, menu_item=0x562e417b4020, force_deactivate=<optimized out>) at ./gtk/gtkmenushell.c:1313
  [Error: gtkmenushell.c was not found in source tree]
#16 0x00007f10da14e852 in gtk_menu_shell_button_release (widget=0x562e41dd79b0, event=<optimized out>) at ./gtk/gtkmenushell.c:738
  [Error: gtkmenushell.c was not found in source tree]
#17 0x00007f10da13c88b in _gtk_marshal_BOOLEAN__BOXED (closure=0x562e40ebdd00, return_value=0x7fff164f85c0, n_param_values=<optimized out>, param_values=0x7fff164f8620, invocation_hint=<optimized out>, marshal_data=<optimized out>) at gtkmarshalers.c:84
  [Error: gtkmarshalers.c was not found in source tree]
#18 0x00007f10dd4f6b4d in g_closure_invoke (closure=0x562e40ebdd00, return_value=0x7fff164f85c0, n_param_values=2, param_values=0x7fff164f8620, invocation_hint=0x7fff164f85a0) at ../../../../gobject/gclosure.c:810
  [Error: gclosure.c was not found in source tree]
#19 0x00007f10dd509104 in signal_emit_unlocked_R (node=node@entry=0x562e40ebe080, detail=detail@entry=0, instance=instance@entry=0x562e41dd79b0, emission_return=emission_return@entry=0x7fff164f8740, instance_and_params=instance_and_params@entry=0x7fff164f8620) at ../../../../gobject/gsignal.c:3673
  [Error: gsignal.c was not found in source tree]
#20 0x00007f10dd511f23 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff164f87f0) at ../../../../gobject/gsignal.c:3401
  [Error: gsignal.c was not found in source tree]
#21 0x00007f10dd512eaf in g_signal_emit (instance=instance@entry=0x562e41dd79b0, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#22 0x00007f10da252cac in gtk_widget_event_internal (widget=widget@entry=0x562e41dd79b0, event=event@entry=0x562e462d09d0) at ./gtk/gtkwidget.c:5017
  [Error: gtkwidget.c was not found in source tree]
#23 0x00007f10da252f47 in IA__gtk_widget_event (widget=widget@entry=0x562e41dd79b0, event=event@entry=0x562e462d09d0) at ./gtk/gtkwidget.c:4814
  [Error: gtkwidget.c was not found in source tree]
#24 0x00007f10da13ab2c in IA__gtk_propagate_event (widget=0x562e41dd79b0, event=0x562e462d09d0) at ./gtk/gtkmain.c:2522
  [Error: gtkmain.c was not found in source tree]
#25 0x00007f10da13af2b in IA__gtk_main_do_event (event=<optimized out>) at ./gtk/gtkmain.c:1712
  [Error: gtkmain.c was not found in source tree]
#26 0x00007f10d9db002c in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at ./gdk/x11/gdkevents-x11.c:2425
  [Error: gdkevents-x11.c was not found in source tree]
#27 0x00007f10dd416bce in g_main_dispatch (context=0x562e40e82cd0) at ../../../../glib/gmain.c:3182
  [Error: gmain.c was not found in source tree]
#28 g_main_context_dispatch (context=context@entry=0x562e40e82cd0) at ../../../../glib/gmain.c:3847
  [Error: gmain.c was not found in source tree]
#29 0x00007f10dd416e68 in g_main_context_iterate (context=0x562e40e82cd0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3920
  [Error: gmain.c was not found in source tree]
#30 0x00007f10dd417162 in g_main_loop_run (loop=0x562e46348bf0) at ../../../../glib/gmain.c:4116
  [Error: gmain.c was not found in source tree]
#31 0x00007f10da139f37 in IA__gtk_main () at ./gtk/gtkmain.c:1284
  [Error: gtkmain.c was not found in source tree]
#32 0x00007f10db20f0b6 in Gtkmm2ext::UI::run (this=0x562e40e912d0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:284
  279: 	if (starting ()) {
  280: 		return;
  281: 	}
  282: 
  283: 	_active = true;
  284: 	theMain->run ();
  285: 	_active = false;
  286: 
  287: 	return;
  288: }
  289: 
#33 0x0000562e3df3f61d in main (argc=<optimized out>, argv=<optimized out>) at ../gtk2_ardour/main.cc:426
  421: 	g_log_set_handler (NULL,
  422: 			GLogLevelFlags (G_LOG_LEVEL_WARNING | G_LOG_FLAG_FATAL |  G_LOG_LEVEL_CRITICAL | G_LOG_FLAG_RECURSION),
  423: 			&ardour_g_log, NULL);
  424: #endif
  425: 
  426: 	ui->run (text_receiver);
  427: 	Gtkmm2ext::Application::instance()->cleanup();
  428: 	delete ui;
  429: 	ui = 0;
  430: 
  431: 	ARDOUR::cleanup ();