diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index 663a96edc1..5029c3f121 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -93,7 +93,7 @@
     <Option name="selection" value="636363b2"/>
     <Option name="tempo bar" value="72727fff"/>
     <Option name="tempo marker" value="f2425bff"/>
-    <Option name="time axis frame" value="0000000f"/>
+    <Option name="time axis frame" value="000000ff"/>
     <Option name="time stretch fill" value="e2b5b596"/>
     <Option name="time stretch outline" value="63636396"/>
     <Option name="transport drag rect" value="969696c6"/>
diff --git a/gtk2_ardour/audio_region_view.cc b/gtk2_ardour/audio_region_view.cc
index 3a269c04bc..60f52d50a3 100644
--- a/gtk2_ardour/audio_region_view.cc
+++ b/gtk2_ardour/audio_region_view.cc
@@ -177,12 +177,10 @@ AudioRegionView::init (Gdk::Color& basic_color, bool wfd)
 	fade_out_shape->property_fill_color_rgba() = fade_color;
 	fade_out_shape->set_data ("regionview", this);
 
-
 	{
 		uint32_t r,g,b,a;
 		UINT_TO_RGBA(fill_color,&r,&g,&b,&a);
 	
-
 		fade_in_handle = new ArdourCanvas::SimpleRect (*group);
 		fade_in_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,0);
 		fade_in_handle->property_outline_pixels() = 0;
diff --git a/gtk2_ardour/editor_mouse.cc b/gtk2_ardour/editor_mouse.cc
index 24a6fb47ef..d0931e4579 100644
--- a/gtk2_ardour/editor_mouse.cc
+++ b/gtk2_ardour/editor_mouse.cc
@@ -3919,13 +3919,17 @@ Editor::region_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event
 		
 			//rv->get_time_axis_view().reveal_dependent_views (*rv);
 		
-		} else if (changed_tracks) {
+		} else if (changed_tracks && dest_rtv->playlist()) {
 			new_region = RegionFactory::create (rv->region());
 		}
 
 		if (changed_tracks || drag_info.copy) {
 
 			boost::shared_ptr<Playlist> to_playlist = dest_rtv->playlist();
+			if (!to_playlist) {
+				++i;
+				continue;
+			}
 
 			latest_regionviews.clear ();
 
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index 5ad459cb34..2dea5fd84b 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -71,10 +71,7 @@ MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &
 	, _mouse_state(None)
 	, _pressed_button(0)
 {
-	group->lower_to_bottom();
 	_note_group->raise_to_top();
-
-	frame->property_fill_color_rgba() = 0xff000033;
 }
 
 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
@@ -106,24 +103,23 @@ MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 	_model = midi_region()->midi_source(0)->model();
 	_enable_display = false;
 
-	RegionView::init(basic_color, false);
+	RegionView::init (basic_color, false);
 
 	compute_colors (basic_color);
 
-	reset_width_dependent_items ((double) _region->length() / samples_per_unit);
-
 	set_y_position_and_height (0, trackview.current_height());
 
 	region_muted ();
+	region_sync_changed ();
 	region_resized (BoundsChanged);
 	region_locked ();
-
-	_region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
+	
+	reset_width_dependent_items (_pixel_width);
+	//reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 
 	set_colors ();
 
 	_enable_display = true;
-
 	if (_model) {
 		if (wfd) {
 			redisplay_model();
@@ -131,8 +127,6 @@ MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 		_model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 	}
 
-	midi_region()->midi_source(0)->Switched.connect(sigc::mem_fun(this, &MidiRegionView::switch_source));
-
 	group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 
 	midi_view()->signal_channel_mode_changed().connect(
diff --git a/gtk2_ardour/time_axis_view_item.cc b/gtk2_ardour/time_axis_view_item.cc
index 6ea16c4b25..6f25f1e6b5 100644
--- a/gtk2_ardour/time_axis_view_item.cc
+++ b/gtk2_ardour/time_axis_view_item.cc
@@ -163,6 +163,7 @@ TimeAxisViewItem::init (const string& it_name, double spu, Gdk::Color& base_colo
 		frame->property_y1() = (double) 1.0;
 		frame->property_x2() = (double) trackview.editor.frame_to_pixel(duration);
 		frame->property_y2() = (double) trackview.current_height();
+		frame->property_outline_pixels() = 1;
 		frame->property_outline_what() = 0xF;
 		frame->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 		frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
diff --git a/libs/ardour/ardour/playlist.h b/libs/ardour/ardour/playlist.h
index ad7210f48f..b937c412ab 100644
--- a/libs/ardour/ardour/playlist.h
+++ b/libs/ardour/ardour/playlist.h
@@ -255,7 +255,7 @@ class Playlist : public SessionObject, public boost::enable_shared_from_this<Pla
 
 	boost::shared_ptr<Region> region_by_id (PBD::ID);
 
-	void add_region_internal (boost::shared_ptr<Region>, nframes_t position);
+	bool add_region_internal (boost::shared_ptr<Region>, nframes_t position);
 	
 	int remove_region_internal (boost::shared_ptr<Region>);
 	RegionList *find_regions_at (nframes_t frame);
diff --git a/libs/ardour/playlist.cc b/libs/ardour/playlist.cc
index 0b0d5ecc22..65cb8637d5 100644
--- a/libs/ardour/playlist.cc
+++ b/libs/ardour/playlist.cc
@@ -518,10 +518,11 @@ Playlist::set_region_ownership ()
 	}
 }
 
-void
+bool
 Playlist::add_region_internal (boost::shared_ptr<Region> region, nframes_t position)
 {
-	assert(region->data_type() == _type);
+	if (region->data_type() != _type)
+		return false;
 
 	RegionSortByPosition cmp;
 	nframes_t old_length = 0;
@@ -562,6 +563,8 @@ Playlist::add_region_internal (boost::shared_ptr<Region> region, nframes_t posit
 
 	region->StateChanged.connect (sigc::bind (mem_fun (this, &Playlist::region_changed_proxy), 
 						  boost::weak_ptr<Region> (region)));
+
+	return true;
 }
 
 void