diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index 7f72725af8..3432a3ccbf 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -188,13 +188,13 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	, add_route_dialog (X_("add-routes"), _("Add Tracks/Busses"))
 	, about (X_("about"), _("About"))
 	, location_ui (X_("locations"), _("Locations"))
-	, route_params (X_("inspector"), _("Tracks and Busses"))
 	, session_option_editor (X_("session-options-editor"), _("Properties"), boost::bind (&ARDOUR_UI::create_session_option_editor, this))
 	, add_video_dialog (X_("add-video"), _("Add Tracks/Busses"), boost::bind (&ARDOUR_UI::create_add_video_dialog, this))
 	, bundle_manager (X_("bundle-manager"), _("Bundle Manager"), boost::bind (&ARDOUR_UI::create_bundle_manager, this))
 	, big_clock_window (X_("big-clock"), _("Big Clock"), boost::bind (&ARDOUR_UI::create_big_clock_window, this))
 	, audio_port_matrix (X_("audio-connection-manager"), _("Audio Connections"), boost::bind (&ARDOUR_UI::create_global_port_matrix, this, ARDOUR::DataType::AUDIO))
 	, midi_port_matrix (X_("midi-connection-manager"), _("MIDI Connections"), boost::bind (&ARDOUR_UI::create_global_port_matrix, this, ARDOUR::DataType::MIDI))
+	, route_params (X_("inspector"), _("Tracks and Busses"), boost::bind (&ARDOUR_UI::create_route_params_window, this))
 
 	, error_log_button (_("Errors"))
 
@@ -363,6 +363,18 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	   and its functionality are separate 
 	*/
 	
+	if (audio_port_matrix) {
+		audio_port_matrix->set_session (_session);
+	}
+
+	if (midi_port_matrix) {
+		midi_port_matrix->set_session (_session);
+	}
+
+	if (route_params) {
+		route_params->set_session (_session);
+	}
+
 	(void) theme_manager.get (true);
 	
 	starting.connect (sigc::mem_fun(*this, &ARDOUR_UI::startup));
diff --git a/gtk2_ardour/ardour_ui.h b/gtk2_ardour/ardour_ui.h
index 0ed5d145b4..e7bc5a2782 100644
--- a/gtk2_ardour/ardour_ui.h
+++ b/gtk2_ardour/ardour_ui.h
@@ -579,7 +579,6 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
         WM::Proxy<AddRouteDialog> add_route_dialog;
         WM::Proxy<About> about;
         WM::Proxy<LocationUIWindow> location_ui;
-        WM::Proxy<RouteParams_UI> route_params;
 
         /* Windows/Dialogs that require a creator method */
 
@@ -589,6 +588,7 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
         WM::ProxyWithConstructor<BigClockWindow> big_clock_window;
         WM::ProxyWithConstructor<GlobalPortMatrixWindow> audio_port_matrix;
         WM::ProxyWithConstructor<GlobalPortMatrixWindow> midi_port_matrix;
+        WM::ProxyWithConstructor<RouteParams_UI> route_params;
 
         /* creator methods */
 
@@ -597,6 +597,7 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
         AddVideoDialog*         create_add_video_dialog ();
         BigClockWindow*         create_big_clock_window(); 
         GlobalPortMatrixWindow* create_global_port_matrix (ARDOUR::DataType);
+        RouteParams_UI*         create_route_params_window ();
 
 	static UIConfiguration *ui_config;
 
diff --git a/gtk2_ardour/ardour_ui_dialogs.cc b/gtk2_ardour/ardour_ui_dialogs.cc
index 02b1efaa2e..a8ff6305a2 100644
--- a/gtk2_ardour/ardour_ui_dialogs.cc
+++ b/gtk2_ardour/ardour_ui_dialogs.cc
@@ -73,6 +73,9 @@ ARDOUR_UI::set_session (Session *s)
 		midi_port_matrix->set_session (s);
 	}
 
+	if (route_params) {
+		route_params->set_session (s);
+	}
 
 	if (!_session) {
 		/* Session option editor cannot exist across change-of-session */
@@ -222,6 +225,9 @@ ARDOUR_UI::unload_session (bool hide_stuff)
 		editor->hide ();
 		mixer->hide ();
 		theme_manager->hide ();
+		audio_port_matrix->hide();
+		midi_port_matrix->hide();
+		route_params->hide();
 	}
 
 	second_connection.disconnect ();
@@ -447,6 +453,14 @@ ARDOUR_UI::create_big_clock_window ()
 	return new BigClockWindow (*big_clock);
 }
 
+RouteParams_UI*
+ARDOUR_UI::create_route_params_window ()
+{
+	RouteParams_UI *rv = new RouteParams_UI ();
+	rv->set_session(_session);
+	return rv;
+}
+
 void
 ARDOUR_UI::handle_locations_change (Location *)
 {