diff --git a/grauph/src/common/util/CountedPtr.h b/grauph/src/common/util/CountedPtr.h
index 5c2a48f0..0886bf36 100644
--- a/grauph/src/common/util/CountedPtr.h
+++ b/grauph/src/common/util/CountedPtr.h
@@ -101,6 +101,7 @@ public:
 	CountedPtr& operator=(const CountedPtr& copy)
 	{
 		if (this != &copy) {
+			assert(_counter != copy._counter);
 			release();
 			retain(copy._counter);
 		}
@@ -112,6 +113,7 @@ public:
 	CountedPtr& operator=(const CountedPtr<Y>& y)
 	{
 		if (this != (CountedPtr*)&y) {
+			assert(_counter != y._counter);
 			release();
 			retain(y._counter);
 		}
diff --git a/grauph/src/libs/client/NodeModel.cpp b/grauph/src/libs/client/NodeModel.cpp
index 3e060401..22b20858 100644
--- a/grauph/src/libs/client/NodeModel.cpp
+++ b/grauph/src/libs/client/NodeModel.cpp
@@ -81,22 +81,22 @@ NodeModel::set_path(const Path& p)
 	for (PortModelList::iterator i = m_ports.begin(); i != m_ports.end(); ++i)
 		(*i)->set_path(m_path + "/" + (*i)->name());
 
-	if (parent_patch() != NULL && old_path.length() > 0)
-		parent_patch()->rename_node(old_path, p);
+	//if (m_parent && old_path.length() > 0)
+	//	parent_patch()->rename_node(old_path, p);
 }
 
 
 void
 NodeModel::add_port(CountedPtr<PortModel> pm)
 {
+	assert(pm);
 	assert(pm->name() != "");
 	assert(pm->path().length() > m_path.length());
 	assert(pm->path().substr(0, m_path.length()) == m_path);
-	assert(pm->parent() == NULL);
+	assert(pm->parent().get() == this);
 	assert(!get_port(pm->name()));
 
 	m_ports.push_back(pm);
-	pm->set_parent(this);
 
 	new_port_sig.emit(pm);
 }
diff --git a/grauph/src/libs/client/NodeModel.h b/grauph/src/libs/client/NodeModel.h
index 05df5ed5..1b79905a 100644
--- a/grauph/src/libs/client/NodeModel.h
+++ b/grauph/src/libs/client/NodeModel.h
@@ -33,7 +33,6 @@ using std::cout; using std::cerr; using std::endl;
 
 namespace LibOmClient {
 
-class PatchModel;
 class PluginModel;
 
 	
@@ -71,8 +70,6 @@ public:
 	float                 y() const          { return m_y; }
 	void                  y(float a)         { m_y = a; }
 	
-	PatchModel* parent_patch() const { return (PatchModel*)m_parent; }
-	
 	// Signals
 	sigc::signal<void, CountedPtr<PortModel> > new_port_sig; 
 	
diff --git a/grauph/src/libs/client/ObjectModel.h b/grauph/src/libs/client/ObjectModel.h
index 94103c53..b9a6d75d 100644
--- a/grauph/src/libs/client/ObjectModel.h
+++ b/grauph/src/libs/client/ObjectModel.h
@@ -25,7 +25,7 @@
 #include <cassert>
 #include <sigc++/sigc++.h>
 #include "util/Path.h"
-
+#include "util/CountedPtr.h"
 using std::string; using std::map; using std::find;
 using std::cout; using std::cerr; using std::endl;
 using Om::Path;
@@ -55,8 +55,8 @@ public:
 	inline const Path& path() const            { return m_path; }
 	virtual void       set_path(const Path& p) { m_path = p; }
 	
-	ObjectModel*  parent() const             { return m_parent; }
-	virtual void  set_parent(ObjectModel* p) { m_parent = p; }
+	CountedPtr<ObjectModel>  parent() const             { return m_parent; }
+	virtual void  set_parent(CountedPtr<ObjectModel> p) { m_parent = p; }
 	
 	ObjectController* controller() const { return m_controller; }
 	
@@ -69,9 +69,9 @@ public:
 	// Signals
 	sigc::signal<void, const string&, const string&> metadata_update_sig; 
 protected:
-	Path              m_path;
-	ObjectModel*      m_parent;
-	ObjectController* m_controller;
+	Path                     m_path;
+	CountedPtr<ObjectModel>  m_parent;
+	ObjectController*        m_controller; // FIXME: remove
 	
 	map<string,string> m_metadata;
 
diff --git a/grauph/src/libs/client/PatchLibrarian.cpp b/grauph/src/libs/client/PatchLibrarian.cpp
index 532f512b..930cdccf 100644
--- a/grauph/src/libs/client/PatchLibrarian.cpp
+++ b/grauph/src/libs/client/PatchLibrarian.cpp
@@ -359,8 +359,8 @@ PatchLibrarian::load_patch(PatchModel* pm, bool wait, bool existing)
 {
 	string filename = pm->filename();
 
-	string additional_path = (pm->parent() == NULL)
-		? "" : ((PatchModel*)pm->parent())->filename();
+	string additional_path = (!pm->parent())
+		? "" : ((PatchModel*)pm->parent().get())->filename();
 	additional_path = additional_path.substr(0, additional_path.find_last_of("/"));
 
 	filename = find_file(pm->filename(), additional_path);
@@ -409,7 +409,7 @@ PatchLibrarian::load_patch(PatchModel* pm, bool wait, bool existing)
 		if ((!xmlStrcmp(cur->name, (const xmlChar*)"name"))) {
 			if (load_name) {
 				assert(key != NULL);
-				if (pm->parent() != NULL) {
+				if (pm->parent()) {
 					path = pm->parent()->base_path() + string((char*)key);
 				} else {
 					path = string("/") + string((char*)key);
diff --git a/grauph/src/libs/client/PatchModel.cpp b/grauph/src/libs/client/PatchModel.cpp
index b19f7606..877f5df0 100644
--- a/grauph/src/libs/client/PatchModel.cpp
+++ b/grauph/src/libs/client/PatchModel.cpp
@@ -63,11 +63,10 @@ PatchModel::add_node(CountedPtr<NodeModel> nm)
 {
 	assert(nm);
 	assert(nm->name().find("/") == string::npos);
-	assert(nm->parent() == NULL);
+	assert(nm->parent().get() == this);
 	assert(m_nodes.find(nm->name()) == m_nodes.end());
 
-	m_nodes[nm->name()] = nm;//CountedPtr<NodeModel>(nm);
-	nm->set_parent(this);
+	m_nodes[nm->name()] = nm;
 
 	new_node_sig.emit(nm);
 }
@@ -222,9 +221,9 @@ PatchModel::remove_connection(const string& src_port_path, const string& dst_por
 bool
 PatchModel::polyphonic() const
 {
-	return (m_parent == NULL)
+	return (!m_parent)
 		? (m_poly > 1)
-		: (m_poly > 1) && m_poly == parent_patch()->poly() && m_poly > 1;
+		: (m_poly > 1) && m_poly == ((PatchModel*)m_parent.get())->poly() && m_poly > 1;
 }
 
 
diff --git a/grauph/src/libs/client/Store.cpp b/grauph/src/libs/client/Store.cpp
index cd52af70..21470f41 100644
--- a/grauph/src/libs/client/Store.cpp
+++ b/grauph/src/libs/client/Store.cpp
@@ -207,11 +207,13 @@ Store::new_node_event(const string& plugin_type, const string& plugin_uri, const
 
 		std::map<string, CountedPtr<ObjectModel> >::iterator pi = m_objects.find(n->path().parent());
 		if (pi != m_objects.end()) {
-			PatchModel* parent = dynamic_cast<PatchModel*>((*pi).second.get());
-			if (parent)
+			CountedPtr<PatchModel> parent = (*pi).second;
+			if (parent) {
+				n->set_parent(parent);
 				parent->add_node(n);
-			else
+			} else {
 				cerr << "ERROR: new node with no parent" << endl;
+			}
 		}
 	}
 }
@@ -251,7 +253,8 @@ Store::new_port_event(const string& path, const string& type, bool is_output)
 
 		std::map<string, CountedPtr<ObjectModel> >::iterator pi = m_objects.find(p->path().parent());
 		if (pi != m_objects.end()) {
-			NodeModel* parent = dynamic_cast<NodeModel*>((*pi).second.get());
+			CountedPtr<NodeModel> parent = (*pi).second;
+			p->set_parent(parent);
 			if (parent)
 				parent->add_port(p);
 			else
diff --git a/grauph/src/libs/client/Store.h b/grauph/src/libs/client/Store.h
index ebcf8d8e..b17d30c2 100644
--- a/grauph/src/libs/client/Store.h
+++ b/grauph/src/libs/client/Store.h
@@ -17,9 +17,6 @@
 #ifndef STORE_H
 #define STORE_H
 
-// FIXME: for CountedPtr
-#define WITH_RTTI
-
 #include <cassert>
 #include <string>
 #include <map>
diff --git a/grauph/src/libs/engine/LV2Plugin.cpp b/grauph/src/libs/engine/LV2Plugin.cpp
index 1c74bca9..4cb7348d 100644
--- a/grauph/src/libs/engine/LV2Plugin.cpp
+++ b/grauph/src/libs/engine/LV2Plugin.cpp
@@ -82,14 +82,10 @@ LV2Plugin::instantiate()
 	Port* port = NULL;
 	
 	for (size_t j=0; j < m_num_ports; ++j) {
-		// LV2 shortnames are guaranteed to be unique
+		// LV2 shortnames are guaranteed to be unique, valid C identifiers
 		port_name = (char*)slv2_port_get_symbol(m_lv2_plugin, j);
 	
-		string::size_type slash_index;
-		
-		// Replace all slashes with "-" (so they don't screw up paths)
-		while ((slash_index = port_name.find("/")) != string::npos)
-			port_name[slash_index] = '-';
+		assert(port_name.find("/") == string::npos);
 
 		port_path = path() + "/" + port_name;
 		
diff --git a/grauph/src/progs/gtk/ControlInterface.cpp b/grauph/src/progs/gtk/ControlInterface.cpp
index eb5eee1b..2b22eee1 100644
--- a/grauph/src/progs/gtk/ControlInterface.cpp
+++ b/grauph/src/progs/gtk/ControlInterface.cpp
@@ -73,7 +73,7 @@ ControlInterface::new_patch_model(PatchModel* const pm)
 			pm->plugin(plugin);
 		}*/
 
-		assert(pm->parent() == NULL);
+		assert(!pm->parent());
 		PatchController* patch = new PatchController(pm);
 		//Store::instance().add_object(patch);
 		//_app->patch_tree()->add_patch(patch);
diff --git a/grauph/src/progs/gtk/ControlPanel.cpp b/grauph/src/progs/gtk/ControlPanel.cpp
index 73520596..9f3279ee 100644
--- a/grauph/src/progs/gtk/ControlPanel.cpp
+++ b/grauph/src/progs/gtk/ControlPanel.cpp
@@ -56,7 +56,7 @@ ControlPanel::init(NodeController* node, size_t poly)
 	assert(node != NULL);
 	assert(poly > 0);
 	
-	const CountedPtr<NodeModel> node_model = node->node_model();
+	const CountedPtr<NodeModel> node_model(node->node_model());
 	
 	if (poly > 1) {
 		m_voice_spinbutton->set_range(0, poly - 1);
@@ -66,9 +66,14 @@ ControlPanel::init(NodeController* node, size_t poly)
 
 	for (PortModelList::const_iterator i = node_model->ports().begin();
 			i != node_model->ports().end(); ++i) {
-		PortController* pc = (PortController*)(*i)->controller();
-		assert(pc != NULL);
-		add_port(pc);
+		// FIXME:
+		if (*i) {
+			PortController* pc = (PortController*)((*i)->controller());
+			assert(pc != NULL);
+			add_port(pc);
+		} else {
+			cerr << "WTF?\n";
+		}
 	}
 	
 	m_callback_enabled = true;
diff --git a/grauph/src/progs/gtk/Controller.cpp b/grauph/src/progs/gtk/Controller.cpp
index 05ebe84a..9a85914b 100644
--- a/grauph/src/progs/gtk/Controller.cpp
+++ b/grauph/src/progs/gtk/Controller.cpp
@@ -91,7 +91,7 @@ Controller::create_patch_from_model(const PatchModel* pm)
 	//int id = get_next_request_id();
 	//set_wait_response_id(id);
 	create_patch_from_model(pm);
-	if (pm->parent() != NULL) {
+	if (pm->parent()) {
 	//	wait_for_response();
 		char temp_buf[16];
 		snprintf(temp_buf, 16, "%f", pm->x());
diff --git a/grauph/src/progs/gtk/Makefile.am b/grauph/src/progs/gtk/Makefile.am
index 71b5c477..c9320bcc 100644
--- a/grauph/src/progs/gtk/Makefile.am
+++ b/grauph/src/progs/gtk/Makefile.am
@@ -6,7 +6,7 @@ MAINTAINERCLEANFILES = Makefile.in
 sharefilesdir = $(pkgdatadir)
 dist_sharefiles_DATA = om_gtk.glade om-icon.png
 
-AM_CXXFLAGS = -DGTK_DISABLE_DEPRECATED -DGDK_DISABLE_DEPRECATED -I$(top_srcdir)/src/common -I$(top_srcdir)/src/libs/client -DPKGDATADIR=\"$(pkgdatadir)\" @GTKMM_CFLAGS@ @LIBGLADEMM_CFLAGS@ @GNOMECANVASMM_CFLAGS@ @LOSC_CFLAGS@ @LASH_CFLAGS@ @FLOWCANVAS_CFLAGS@
+AM_CXXFLAGS = -DGTK_DISABLE_DEPRECATED -DGDK_DISABLE_DEPRECATED -I$(top_srcdir)/src/common -I$(top_srcdir)/src/libs/client -DPKGDATADIR=\"$(pkgdatadir)\" @GTKMM_CFLAGS@ @LIBGLADEMM_CFLAGS@ @GNOMECANVASMM_CFLAGS@ @LOSC_CFLAGS@ @LASH_CFLAGS@ @FLOWCANVAS_CFLAGS@ -DWITH_RTTI
 om_gtk_LDADD = @GTKMM_LIBS@ @LIBGLADEMM_LIBS@ @GNOMECANVASMM_LIBS@ @LOSC_LIBS@ @LASH_LIBS@ @FLOWCANVAS_LIBS@ ../../libs/client/libomclient.la
 om_gtk_DEPENDENCIES = ../../libs/client/libomclient.la
 
diff --git a/grauph/src/progs/gtk/NewSubpatchWindow.cpp b/grauph/src/progs/gtk/NewSubpatchWindow.cpp
index 742f6d63..dc4e47b4 100644
--- a/grauph/src/progs/gtk/NewSubpatchWindow.cpp
+++ b/grauph/src/progs/gtk/NewSubpatchWindow.cpp
@@ -79,8 +79,6 @@ NewSubpatchWindow::name_changed()
 void
 NewSubpatchWindow::ok_clicked()
 {
-	cerr << "FIXME new subpatch\n";
-	/*
 	PatchModel* pm = new PatchModel(
 		m_patch_controller->model()->base_path() + m_name_entry->get_text(),
 		m_poly_spinbutton->get_value_as_int());
@@ -100,7 +98,6 @@ NewSubpatchWindow::ok_clicked()
 	pm->set_metadata("module-y", temp_buf);
 	Controller::instance().create_patch_from_model(pm);
 	hide();
-	*/
 }			
 
 
diff --git a/grauph/src/progs/gtk/NodeController.cpp b/grauph/src/progs/gtk/NodeController.cpp
index cc43015d..6cc0b94e 100644
--- a/grauph/src/progs/gtk/NodeController.cpp
+++ b/grauph/src/progs/gtk/NodeController.cpp
@@ -53,7 +53,8 @@ NodeController::NodeController(CountedPtr<NodeModel> model)
 	for (PortModelList::const_iterator i = node_model()->ports().begin();
 			i != node_model()->ports().end(); ++i) {
 		assert(!(*i)->controller());
-		assert((*i)->parent() == model.get());
+		assert((*i)->parent());
+		assert((*i)->parent().get() == node_model().get());
 		// FIXME: leak
 		PortController* const pc = new PortController(*i);
 		assert((*i)->controller() == pc); // PortController() does this
@@ -193,7 +194,8 @@ NodeController::metadata_update(const string& key, const string& value)
 void
 NodeController::add_port(CountedPtr<PortModel> pm)
 {
-	assert(pm->parent() == node_model().get());
+	assert(pm->parent().get() == node_model().get());
+	assert(pm->parent() == node_model());
 	assert(node_model()->get_port(pm->name()) == pm);
 	
 	cout << "[NodeController] Adding port " << pm->path() << endl;
@@ -225,9 +227,9 @@ NodeController::show_control_window()
 {
 	size_t poly = 1;
 	if (node_model()->polyphonic())
-		poly = node_model()->parent_patch()->poly();
+		poly = ((PatchModel*)node_model()->parent().get())->poly();
 	
-	if (m_control_window == NULL)
+	if (!m_control_window)
 		m_control_window = new NodeControlWindow(this, poly);
 	
 	if (m_control_window->control_panel()->num_controls() > 0)
@@ -245,7 +247,7 @@ NodeController::on_menu_destroy()
 void
 NodeController::show_rename_window()
 {
-	assert(node_model()->parent() != NULL);
+	assert(node_model()->parent());
 
 	// FIXME: will this be magically cleaned up?
 	RenameWindow* win = NULL;
@@ -265,6 +267,8 @@ NodeController::show_rename_window()
 void
 NodeController::on_menu_clone()
 {
+	cerr << "FIXME: clone broken\n";
+	/*
 	assert(node_model());
 	//assert(m_parent != NULL);
 	//assert(m_parent->model() != NULL);
@@ -295,6 +299,7 @@ NodeController::on_menu_clone()
 	nm->x(node_model()->x() + 20);
 	nm->y(node_model()->y() + 20);
 	Controller::instance().create_node_from_model(nm);
+	*/
 }
 
 
diff --git a/grauph/src/progs/gtk/PatchController.cpp b/grauph/src/progs/gtk/PatchController.cpp
index ada6b003..4f639340 100644
--- a/grauph/src/progs/gtk/PatchController.cpp
+++ b/grauph/src/progs/gtk/PatchController.cpp
@@ -60,7 +60,6 @@ PatchController::PatchController(CountedPtr<PatchModel> model)
   m_module_y(0)
 {
 	assert(model->path().length() > 0);
-	assert(model->parent() == NULL);
 	assert(model->controller() == this); // NodeController() does this
 
 /* FIXME	if (model->path() != "/") {
@@ -168,13 +167,13 @@ PatchController::destroy()
 	//Store::instance().remove_object(this);
 	
 	// Delete self from parent (this will delete model)
-	if (patch_model()->parent() != NULL) {
+	/*if (patch_model()->parent() != NULL) {
 		PatchController* const parent = (PatchController*)patch_model()->parent()->controller();
 		assert(parent != NULL);
 		parent->remove_node(name());
 	} else {
 		//delete m_model;
-	}
+	}*/
 }
 
 
@@ -419,7 +418,7 @@ PatchController::add_node(CountedPtr<NodeModel> nm)
 	cerr << "ADD NODE\n";
 
 	assert(nm);
-	assert(nm->parent() == m_patch_model.get());
+	assert(nm->parent() == m_patch_model);
 	assert(nm->path().parent() == m_patch_model->path());
 	
 	/*if (patch_model()->get_node(nm->name()) != NULL) {
@@ -506,7 +505,7 @@ void
 PatchController::add_port(CountedPtr<PortModel> pm)
 {
 	assert(pm);
-	assert(pm->parent() == NULL);
+	assert(!pm->parent());
 
 	//cerr << "[PatchController] Adding port " << pm->path() << endl;
 
diff --git a/grauph/src/progs/gtk/PatchTreeWindow.cpp b/grauph/src/progs/gtk/PatchTreeWindow.cpp
index 78ee9428..390187b8 100644
--- a/grauph/src/progs/gtk/PatchTreeWindow.cpp
+++ b/grauph/src/progs/gtk/PatchTreeWindow.cpp
@@ -68,7 +68,7 @@ PatchTreeWindow::add_patch(PatchController* pc)
 {
 	const CountedPtr<PatchModel> pm = pc->patch_model();
 
-	if (pm->parent() == NULL) {
+	if (!pm->parent()) {
 		Gtk::TreeModel::iterator iter = m_patch_treestore->append();
 		Gtk::TreeModel::Row row = *iter;
 		if (pm->path() == "/") {
diff --git a/grauph/src/progs/gtk/PortController.cpp b/grauph/src/progs/gtk/PortController.cpp
index eaad6efe..fcb93b30 100644
--- a/grauph/src/progs/gtk/PortController.cpp
+++ b/grauph/src/progs/gtk/PortController.cpp
@@ -30,7 +30,7 @@ PortController::PortController(CountedPtr<PortModel> model)
   m_control_panel(NULL)
 {
 	assert(model);
-	assert(model->parent() != NULL);
+	assert(model->parent());
 	assert(model->controller() == NULL);
 
 	model->set_controller(this);
@@ -54,7 +54,7 @@ PortController::remove_from_store()
 void
 PortController::destroy()
 {
-	assert(m_model->parent() != NULL);
+	assert(m_model->parent());
 	NodeController* parent = (NodeController*)m_model->parent()->controller();
 	assert(parent != NULL);
 
diff --git a/grauph/src/progs/gtk/SubpatchModule.cpp b/grauph/src/progs/gtk/SubpatchModule.cpp
index 9c0e78e4..8c79aed5 100644
--- a/grauph/src/progs/gtk/SubpatchModule.cpp
+++ b/grauph/src/progs/gtk/SubpatchModule.cpp
@@ -75,7 +75,7 @@ SubpatchModule::on_double_click(GdkEventButton* event)
 void
 SubpatchModule::browse_to_patch()
 {
-	assert(m_patch->model()->parent() != NULL);
+	assert(m_patch->model()->parent());
 	PatchController* pc = (PatchController*)m_patch->model()->parent()->controller();
 	assert(pc != NULL);
 	assert(pc->window() != NULL);