diff --git a/CMakeLists.txt b/CMakeLists.txt
index fed2470..6934103 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -279,6 +279,7 @@ set(VMIX_RSC_FILES
     ./rsc/mesh/circle.ply
     ./rsc/mesh/icon_video.ply
     ./rsc/mesh/icon_image.ply
+    ./rsc/mesh/icon_vimix.ply
 )
 
 add_executable(${VMIX_BINARY}
diff --git a/ImGuiVisitor.cpp b/ImGuiVisitor.cpp
index 7fbec0c..c8dff55 100644
--- a/ImGuiVisitor.cpp
+++ b/ImGuiVisitor.cpp
@@ -265,18 +265,25 @@ void ImGuiVisitor::visit (Source& s)
     s.groupNode(View::GEOMETRY)->accept(*this);
 
     // Action on source
-    ImGui::Button("Clone", ImVec2(IMGUI_RIGHT_ALIGN, 0));
+//    ImGui::Button("Clone", ImVec2(IMGUI_RIGHT_ALIGN, 0));
 }
 
 void ImGuiVisitor::visit (MediaSource& s)
 {
-    if (ImGui::Button("Open Media Player", ImVec2(IMGUI_RIGHT_ALIGN, 0)) )
-        Settings::application.media_player = !Settings::application.media_player;
+    if ( s.mediaplayer()->duration() == GST_CLOCK_TIME_NONE) {
+        ImGui::Text("Image");
+    }
+    else {
+        ImGui::Text("Video");
+        if (ImGui::Button("Open Media Player", ImVec2(IMGUI_RIGHT_ALIGN, 0)) )
+            Settings::application.media_player = true;
+    }
 }
 
 void ImGuiVisitor::visit (SessionSource& s)
 {
 //    ImGui::Button("Expand", ImVec2(IMGUI_RIGHT_ALIGN, 0));
+    ImGui::Text("Session");
     if (ImGui::Button("Make Current", ImVec2(IMGUI_RIGHT_ALIGN, 0)) )
-        Mixer::manager().open( s.path() );
+        Mixer::manager().set( s.detach() );
 }
diff --git a/MediaSource.cpp b/MediaSource.cpp
index ab8f214..7f4d64b 100644
--- a/MediaSource.cpp
+++ b/MediaSource.cpp
@@ -26,11 +26,9 @@ MediaSource::MediaSource() : Source(), path_("")
 
 MediaSource::~MediaSource()
 {
-    // TODO delete media surface with visitor
+    // delete media surface & player
     delete mediasurface_;
-
     delete mediaplayer_;
-    // TODO verify that all surfaces and node is deleted in Source destructor
 }
 
 void MediaSource::setPath(const std::string &p)
diff --git a/Mixer.cpp b/Mixer.cpp
index c2b9895..c07bcfb 100644
--- a/Mixer.cpp
+++ b/Mixer.cpp
@@ -21,46 +21,43 @@ using namespace tinyxml2;
 
 #include "Mixer.h"
 
-// static objects for multithreaded session loading
+// static semaphore to prevent multiple threads for load / save
 static std::atomic<bool> sessionThreadActive_ = false;
-static std::string sessionThreadFilename_ = "";
-static std::atomic<bool> sessionLoadFinished_ = false;
+static std::atomic<bool> sessionSwapRequested_ = false;
 
+// static multithreaded session loading
 static void loadSession(const std::string& filename, Session *session)
 {
     while (sessionThreadActive_)
         std::this_thread::sleep_for( std::chrono::milliseconds(50));
     sessionThreadActive_ = true;
-    sessionLoadFinished_ = false;
-    sessionThreadFilename_ = "";
 
     // actual loading of xml file
     SessionCreator creator( session );
 
-    if (!creator.load(filename)) {
+    if (creator.load(filename)) {
+        // loaded ok
+        session->setFilename(filename);
+        sessionSwapRequested_ = true;
+
+        // cosmetics load ok
+        Log::Notify("Session %s loaded. %d source(s) created.", filename.c_str(), session->numSource());
+    }
+    else {
         // error loading
         Log::Warning("Failed to load Session file %s.", filename.c_str());
     }
-    else {
-        // loaded ok
-        Log::Notify("Session %s loaded. %d source(s) created.", filename.c_str(), session->numSource());
-    }
 
-    sessionThreadFilename_ = filename;
-    sessionLoadFinished_ = true;
     sessionThreadActive_ = false;
 }
 
-// static objects for multithreaded session saving
-static std::atomic<bool> sessionSaveFinished_ = false;
+// static multithreaded session saving
 static void saveSession(const std::string& filename, Session *session)
 {
     // reset
     while (sessionThreadActive_)
         std::this_thread::sleep_for( std::chrono::milliseconds(50));
     sessionThreadActive_ = true;
-    sessionSaveFinished_ = false;
-    sessionThreadFilename_ = "";
 
     // creation of XML doc
     XMLDocument xmlDoc;
@@ -103,27 +100,33 @@ static void saveSession(const std::string& filename, Session *session)
     }
 
     // save file to disk
-    XMLSaveDoc(&xmlDoc, filename);
+    if ( XMLSaveDoc(&xmlDoc, filename) ) {
+        // all ok
+        session->setFilename(filename);
+        // cosmetics saved ok
+        Settings::application.recentSessions.push(filename);
+        Log::Notify("Session %s saved.", filename.c_str());
+    }
+    else {
+        // error loading
+        Log::Warning("Failed to save Session file %s.", filename.c_str());
+    }
 
-    // loaded ok
-    Log::Notify("Session %s saved.", filename.c_str());
-
-    // all ok
-    sessionThreadFilename_ = filename;
-    sessionSaveFinished_ = true;
     sessionThreadActive_ = false;
 }
 
 Mixer::Mixer() : session_(nullptr), back_session_(nullptr), current_view_(nullptr)
 {
-    // this initializes with a new empty session
-    newSession();
+    // unsused initial empty session
+    session_ = new Session;
 
     // auto load if Settings ask to
-    if ( Settings::application.recentSessions.load_at_start ) {
-        if ( Settings::application.recentSessions.filenames.size() > 0 )
-            open( Settings::application.recentSessions.filenames.back() );
-    }
+    if ( Settings::application.recentSessions.load_at_start &&
+         Settings::application.recentSessions.filenames.size() > 0 )
+        open( Settings::application.recentSessions.filenames.back() );
+    else
+        // initializes with a new empty session
+        clear();
 
     // this initializes with the current view
     setCurrentView( (View::Mode) Settings::application.current_view );
@@ -132,26 +135,18 @@ Mixer::Mixer() : session_(nullptr), back_session_(nullptr), current_view_(nullpt
 void Mixer::update()
 {
     // change session when threaded loading is finished
-    if (sessionLoadFinished_) {
-        sessionLoadFinished_ = false;
+    if (sessionSwapRequested_) {
+        sessionSwapRequested_ = false;
         // successfully loading
         if ( back_session_ ) {
             // swap front and back sessions
             swap();
-            // set session filename and remember it
-            sessionFilename_ = sessionThreadFilename_;
-            Settings::application.recentSessions.push(sessionFilename_);
+            // set session filename
+            Rendering::manager().setWindowTitle(session_->filename());
+            Settings::application.recentSessions.push(session_->filename());
         }
     }
 
-    // confirm when threaded saving is finished
-    if (sessionSaveFinished_) {
-        sessionSaveFinished_ = false;
-        // set (new) session filename and remember it
-        sessionFilename_ = sessionThreadFilename_;
-        Settings::application.recentSessions.push(sessionFilename_);
-    }
-
     // compute dt
     if (update_time_ == GST_CLOCK_TIME_NONE)
         update_time_ = gst_util_get_timestamp ();
@@ -166,7 +161,6 @@ void Mixer::update()
     mixing_.update(dt);
     geometry_.update(dt);
     layer_.update(dt);
-    // TODO other views?
 
     // optimize the reordering in depth for views
     View::need_reordering_ = false;
@@ -195,7 +189,7 @@ void Mixer::createSourceFile(std::string path)
     {
         // create a session source
         SessionSource *ss = new SessionSource();
-        ss->setPath(path);
+        ss->load(path);
         s = ss;
     }
     else {
@@ -358,7 +352,7 @@ void Mixer::setCurrentView(View::Mode m)
     Settings::application.current_view = (int) m;
 }
 
-View *Mixer::getView(View::Mode m)
+View *Mixer::view(View::Mode m)
 {
     switch (m) {
     case View::GEOMETRY:
@@ -379,8 +373,8 @@ View *Mixer::currentView()
 
 void Mixer::save()
 {
-    if (!sessionFilename_.empty())
-        saveas(sessionFilename_);
+    if (!session_->filename().empty())
+        saveas(session_->filename());
 }
 
 void Mixer::saveas(const std::string& filename)
@@ -457,7 +451,7 @@ void Mixer::swap()
     back_session_ = nullptr;
 }
 
-void Mixer::newSession()
+void Mixer::clear()
 {
     // delete previous back session if needed
     if (back_session_)
@@ -467,13 +461,21 @@ void Mixer::newSession()
     back_session_ = new Session;   
 
     // swap current with empty
-    swap();
-
-    // default view config
-    mixing_.restoreSettings();
-    geometry_.restoreSettings();
-    layer_.restoreSettings();
-
-    // empty session file name (does not save)
-    sessionFilename_ = "";
+    sessionSwapRequested_ = true;
+}
+
+void Mixer::set(Session *s)
+{
+    if ( s == nullptr )
+        return;
+
+    // delete previous back session if needed
+    if (back_session_)
+        delete back_session_;
+
+    // set to new given session
+    back_session_ = s;
+
+    // swap current with given session
+    sessionSwapRequested_ = true;
 }
diff --git a/Mixer.h b/Mixer.h
index 5c84bf3..8dc7238 100644
--- a/Mixer.h
+++ b/Mixer.h
@@ -35,12 +35,12 @@ public:
 
     // manangement of sources
     void createSourceFile(std::string path);
-
-    void deleteSource(Source *s);
-    void deleteCurrentSource();
+    void createSourceRender() {}
+    void createSourceClone() {}
 
     // operations on sources
     void renameSource(Source *s, const std::string &newname);
+    void deleteSource(Source *s);
 
     // current source
     void setCurrentSource(std::string namesource);
@@ -48,22 +48,25 @@ public:
     void setCurrentSource(int index);
     void setCurrentSource(Source *s);
     void unsetCurrentSource();
+    void deleteCurrentSource();
     Source *currentSource();
     int indexCurrentSource();
 
     // management of view
-    View *getView(View::Mode m);
+    View *view(View::Mode m);
     void setCurrentView(View::Mode m);
     View *currentView();
 
-    void setSession(Session *s) { session_ = s; }
-    Session *session() { return session_; }
-
-    // load and save session
-    void open(const std::string& filename);
-    void saveas(const std::string& filename);
+    // manipulate, load and save sessions
+    inline Session *session() const { return session_; }
+    void clear();
     void save();
-    void newSession();
+    void saveas(const std::string& filename);
+    void open(const std::string& filename);
+    void import(const std::string& filename) {}
+    void import(Session *s) {}
+    void set(Session *s);
+//    inline std::string currentSessionFile() { return currentFilename_; }
 
 protected:
 
@@ -72,11 +75,10 @@ protected:
     void swap();
 
 //    void validateFilename(const std::string& filename);
-    std::string sessionFilename_;
+//    std::string currentFilename_;
 
     void insertSource(Source *s);
     void setCurrentSource(SourceList::iterator it);
-
     SourceList::iterator current_source_;
     int current_source_index_;
 
diff --git a/RenderingManager.cpp b/RenderingManager.cpp
index 76ed2db..dd49013 100644
--- a/RenderingManager.cpp
+++ b/RenderingManager.cpp
@@ -207,6 +207,13 @@ void Rendering::GrabWindow(int dx, int dy)
     glfwSetWindowPos(main_window_, xpos + dx, ypos + dy);
 }
 
+
+void Rendering::setWindowTitle(std::string title)
+{
+    std::string window_title = std::string(APP_NAME " -- ") + title;
+    glfwSetWindowTitle(main_window_, window_title.c_str());
+}
+
 void Rendering::PushFrontDrawCallback(RenderingCallback function)
 {
     draw_callbacks_.push_front(function);
diff --git a/RenderingManager.h b/RenderingManager.h
index 06c2164..1ad0dea 100644
--- a/RenderingManager.h
+++ b/RenderingManager.h
@@ -68,28 +68,27 @@ public:
     // get Screenshot
     class Screenshot *CurrentScreenshot();
     
+    // window management
+    void setWindowTitle(std::string title);
     // request fullscreen
     bool IsFullscreen ();
-    void ToggleFullscreen();
+    void ToggleFullscreen ();
     // get width of rendering area
     float Width();
     // get height of rendering area
     float Height();
     // get aspect ratio of rendering area
     float AspectRatio();
+    // monitor management
+    float MonitorWidth();
+    float MonitorHeight();
+    inline float DPIScale() const { return dpi_scale_; }
 
     // get projection matrix (for sharers) => Views
     glm::mat4 Projection();
     // unproject from window coordinate
     glm::vec3 unProject(glm::vec2 screen_coordinate, glm::mat4 modelview = glm::mat4(1.f));
 
-    // for opengl pipeline in gstreamer
-    void LinkPipeline( GstPipeline *pipeline );
-
-    float MonitorWidth();
-    float MonitorHeight();
-    inline float DPIScale() const { return dpi_scale_; }
-
 private:
 
     // loop update to begin new frame
@@ -110,7 +109,8 @@ private:
     Screenshot screenshot_;
     bool request_screenshot_;
 
-
+    // for opengl pipeline in gstreamer
+    void LinkPipeline( GstPipeline *pipeline );
 };
 
 
diff --git a/Session.cpp b/Session.cpp
index 39698d1..c03f6ba 100644
--- a/Session.cpp
+++ b/Session.cpp
@@ -1,19 +1,29 @@
 #include <algorithm>
 
 #include "defines.h"
+#include "Settings.h"
 #include "FrameBuffer.h"
 #include "Session.h"
 #include "GarbageVisitor.h"
 
 #include "Log.h"
 
-Session::Session()
+Session::Session() : filename_("")
 {
     config_[View::RENDERING] = new Group;
     config_[View::RENDERING]->scale_ = render_.resolution();
+
     config_[View::GEOMETRY] = new Group;
+    config_[View::GEOMETRY]->scale_ = Settings::application.views[View::GEOMETRY].default_scale;
+    config_[View::GEOMETRY]->translation_ = Settings::application.views[View::GEOMETRY].default_translation;
+
     config_[View::LAYER] = new Group;
+    config_[View::LAYER]->scale_ = Settings::application.views[View::LAYER].default_scale;
+    config_[View::LAYER]->translation_ = Settings::application.views[View::LAYER].default_translation;
+
     config_[View::MIXING] = new Group;
+    config_[View::MIXING]->scale_ = Settings::application.views[View::MIXING].default_scale;
+    config_[View::MIXING]->translation_ = Settings::application.views[View::MIXING].default_translation;
 }
 
 
diff --git a/Session.h b/Session.h
index 4a35142..3aa1c1e 100644
--- a/Session.h
+++ b/Session.h
@@ -19,12 +19,11 @@ public:
     SourceList::iterator begin ();
     SourceList::iterator end ();
     SourceList::iterator find (int index);
+    int index (SourceList::iterator it) const;
     SourceList::iterator find (Source *s);
     SourceList::iterator find (std::string name);
     SourceList::iterator find (Node *node);
-
     uint numSource() const;
-    int index (SourceList::iterator it) const;
 
     // update all sources
     void update (float dt);
@@ -36,10 +35,14 @@ public:
     // configuration for group nodes of views
     inline Group *config (View::Mode m) const { return config_.at(m); }
 
+    // name of file containing this session
+    void setFilename(const std::string &filename) { filename_ = filename; }
+    std::string filename() const { return filename_; }
+
 protected:
     RenderView render_;
     SourceList sources_;
-
+    std::string filename_;
     std::map<View::Mode, Group*> config_;
 };
 
diff --git a/SessionCreator.cpp b/SessionCreator.cpp
index c9c15f6..4e1542a 100644
--- a/SessionCreator.cpp
+++ b/SessionCreator.cpp
@@ -234,7 +234,7 @@ void SessionCreator::visit (SessionSource& s)
     XMLElement* pathNode = xmlCurrent_->FirstChildElement("path");
     if (pathNode) {
         std::string path = std::string ( pathNode->GetText() );
-        s.setPath(path);
+        s.load(path);
     }
 
 }
diff --git a/SessionSource.cpp b/SessionSource.cpp
index 480ab17..7bfe077 100644
--- a/SessionSource.cpp
+++ b/SessionSource.cpp
@@ -24,12 +24,17 @@ void SessionSource::loadSession(const std::string& filename, SessionSource *sour
     // actual loading of xml file
     SessionCreator creator( source->session_ );
 
-    if (!creator.load(filename)) {
+    if (creator.load(filename)) {
+        // all ok, validate session filename
+        source->session_->setFilename(filename);
+    }
+    else {
         // error loading
         Log::Notify("Failed to load Session file %s.", filename.c_str());
         source->loadFailed_ = true;
     }
 
+    // end thread
     source->loadFinished_ = true;
 }
 
@@ -49,14 +54,15 @@ SessionSource::SessionSource() : Source(), path_("")
 
 SessionSource::~SessionSource()
 {
-    // TODO delete media surface with visitor
+    // delete surface
     delete sessionsurface_;
 
-    // TODO close and delete session
-    delete session_;
+    // delete session
+    if (session_)
+        delete session_;
 }
 
-void SessionSource::setPath(const std::string &p)
+void SessionSource::load(const std::string &p)
 {
     path_ = p;
 
@@ -66,14 +72,15 @@ void SessionSource::setPath(const std::string &p)
     Log::Notify("Opening %s", p.c_str());
 }
 
-std::string SessionSource::path() const
+Session *SessionSource::detach()
 {
-    return path_;
-}
+    // remember pointer to give away
+    Session *giveaway = session_;
 
-Session *SessionSource::session() const
-{
-    return session_;
+    // work on a new session
+    session_ = new Session;
+
+    return giveaway;
 }
 
 bool SessionSource::failed() const
@@ -89,11 +96,15 @@ void SessionSource::init()
         // set resolution
         session_->setResolution( session_->config(View::RENDERING)->scale_ );
 
+        // update once
+        session_->update(dt_);
+
         // get the texture index from media player, apply it to the media surface
         sessionsurface_->setTextureIndex( session_->frame()->texture() );
 
         // create Frame buffer matching size of media player
         renderbuffer_ = new FrameBuffer(session_->frame()->resolution());
+        renderbuffer_->setClearColor(glm::vec4(0.f, 0.f, 0.f, 1.f));
 
         // create the surfaces to draw the frame buffer in the views
         rendersurface_ = new FrameBufferSurface(renderbuffer_, blendingshader_);
@@ -108,8 +119,8 @@ void SessionSource::init()
         if (is)  is->stipple = 1.0;
         groups_[View::MIXING]->attach(surfacemix);
         groups_[View::LAYER]->attach(surfacemix);
-        // TODO icon session
-//            overlays_[View::MIXING]->attach( new Mesh("mesh/icon_video.ply") );
+        // icon session
+        overlays_[View::MIXING]->attach( new Mesh("mesh/icon_vimix.ply") );
 
         // scale all mixing nodes to match aspect ratio of the media
         for (NodeSet::iterator node = groups_[View::MIXING]->begin();
@@ -141,13 +152,13 @@ void SessionSource::init()
 void SessionSource::render()
 {
     if (!initialized_)
+    {
         init();
+    }
     else {
         // update session
         session_->update(dt_);
 
-        sessionsurface_->setTextureIndex( session_->frame()->texture() );
-
         // render the media player into frame buffer
         static glm::mat4 projection = glm::ortho(-1.f, 1.f, -1.f, 1.f, -1.f, 1.f);
         renderbuffer_->begin();
diff --git a/SessionSource.h b/SessionSource.h
index 476d226..e8f8ae9 100644
--- a/SessionSource.h
+++ b/SessionSource.h
@@ -16,10 +16,12 @@ public:
     void accept (Visitor& v) override;
     bool failed() const override;
 
-    // Media specific interface
-    void setPath(const std::string &p);
-    std::string path() const;
-    Session *session() const;
+    // Session Source specific interface
+    void load(const std::string &p);
+    Session *detach();
+
+    inline std::string path() const { return path_; }
+    inline Session *session() const { return session_; }
 
 protected:
 
diff --git a/Settings.h b/Settings.h
index 01be91f..609d3bd 100644
--- a/Settings.h
+++ b/Settings.h
@@ -97,7 +97,7 @@ struct Application
         current_view = 1;
         framebuffer_ar = 3;
         framebuffer_h = 1;
-        windows.push_back(WindowConfig(APP_TITLE));
+        windows.push_back(WindowConfig(APP_NAME APP_TITLE));
     }
 
 };
diff --git a/UserInterfaceManager.cpp b/UserInterfaceManager.cpp
index 265c17e..2e46064 100644
--- a/UserInterfaceManager.cpp
+++ b/UserInterfaceManager.cpp
@@ -212,11 +212,14 @@ void UserInterface::handleKeyboard()
         }
         else if (ImGui::IsKeyPressed( GLFW_KEY_S )) {
             // Save Session
-            Mixer::manager().save();
+            if (Mixer::manager().session()->filename().empty())
+                std::thread (SessionFileDialogSave, Settings::application.recentSessions.path).detach();
+            else
+                Mixer::manager().save();
         }
         else if (ImGui::IsKeyPressed( GLFW_KEY_W )) {
             // New Session
-            Mixer::manager().newSession();
+            Mixer::manager().clear();
         }
         else if (ImGui::IsKeyPressed( GLFW_KEY_L )) {
             // Logs
@@ -237,6 +240,7 @@ void UserInterface::handleKeyboard()
 
     }
     else {
+        // TODO make sure no entry / window box is active
         keyboard_modifier_active = false;
 
         // Action keys
@@ -472,7 +476,10 @@ void UserInterface::showMenuFile()
         navigator.hidePannel();
     }
     if (ImGui::MenuItem( ICON_FA_FILE_DOWNLOAD "  Save", "Ctrl+S")) {
-        Mixer::manager().save();
+        if (Mixer::manager().session()->filename().empty())
+            std::thread (SessionFileDialogSave, Settings::application.recentSessions.path).detach();
+        else
+            Mixer::manager().save();
         navigator.hidePannel();
     }
     if (ImGui::MenuItem( ICON_FA_FOLDER_OPEN "  Save as")) {
@@ -483,7 +490,7 @@ void UserInterface::showMenuFile()
     ImGui::Separator();
 
     if (ImGui::MenuItem( ICON_FA_FILE "  New", "Ctrl+W")) {
-        Mixer::manager().newSession();
+        Mixer::manager().clear();
         navigator.hidePannel();
     }
     ImGui::SetNextItemWidth( ImGui::GetContentRegionAvail().x );
diff --git a/defines.h b/defines.h
index 8a532d5..f3f5a9b 100644
--- a/defines.h
+++ b/defines.h
@@ -2,7 +2,7 @@
 #define VMIX_DEFINES_H
 
 #define APP_NAME "vimix"
-#define APP_TITLE "vimix -- Video Live Mixer"
+#define APP_TITLE " -- Video Live Mixer"
 #define APP_SETTINGS "vimix.xml"
 #define APP_VERSION_MAJOR 0
 #define APP_VERSION_MINOR 1
diff --git a/main.cpp b/main.cpp
index 042df03..aa5086b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -45,29 +45,9 @@
 #define PI 3.14159265358979323846
 
 
-void drawCustomGui()
-{
-
-    ImGui::SetNextWindowPos(ImVec2(200, 200), ImGuiCond_FirstUseEver);
-    ImGui::SetNextWindowSize(ImVec2(300, 300), ImGuiCond_FirstUseEver);
-
-    if ( !ImGui::Begin("Custom"))
-    {
-        ImGui::End();
-        return;
-    }
-
-
-    ImGui::End();
-}
-
-
 void drawScene()
 {
-//    Mixer::manager().update();
-
     Mixer::manager().draw();
-
 }
 
 
@@ -102,7 +82,7 @@ int main(int, char**)
 //     test text editor
     UserInterface::manager().fillShaderEditor( Resource::getText("shaders/image.fs") );
 
-    // init the scene
+    // draw the scene
     Rendering::manager().PushFrontDrawCallback(drawScene);
 
     // init elements to the scene
@@ -135,8 +115,6 @@ int main(int, char**)
         Rendering::manager().Draw();
     }
 
-//    Mixer::manager().save("./testsession.vmx");
-
     UserInterface::manager().Terminate();
     Rendering::manager().Terminate();
 
diff --git a/rsc/mesh/icon_image.ply b/rsc/mesh/icon_image.ply
index 75b0dd4..a6fd36f 100644
--- a/rsc/mesh/icon_image.ply
+++ b/rsc/mesh/icon_image.ply
@@ -12,67 +12,67 @@ property uchar alpha
 element face 57
 property list uchar uint vertex_indices
 end_header
--0.121622 1.052659 0.000000 255 255 255 255
--0.101327 1.214990 0.000000 255 255 255 255
--0.121622 1.235281 0.000000 255 255 255 255
-0.121924 1.235281 0.000000 255 255 255 255
-0.101629 1.214990 0.000000 255 255 255 255
-0.121924 1.052659 0.000000 255 255 255 255
--0.101327 1.072951 0.000000 255 255 255 255
-0.101629 1.072951 0.000000 255 255 255 255
--0.057726 1.194559 0.000000 255 255 255 255
--0.053597 1.194559 0.000000 255 255 255 255
--0.055662 1.194698 0.000000 255 255 255 255
--0.051617 1.194155 0.000000 255 255 255 255
--0.059707 1.194155 0.000000 255 255 255 255
--0.049739 1.193502 0.000000 255 255 255 255
--0.061585 1.193502 0.000000 255 255 255 255
--0.047981 1.192620 0.000000 255 255 255 255
--0.063343 1.192620 0.000000 255 255 255 255
--0.046362 1.191526 0.000000 255 255 255 255
--0.064961 1.191526 0.000000 255 255 255 255
--0.044900 1.190239 0.000000 255 255 255 255
--0.066424 1.190239 0.000000 255 255 255 255
--0.043613 1.188778 0.000000 255 255 255 255
--0.067711 1.188778 0.000000 255 255 255 255
--0.042519 1.187159 0.000000 255 255 255 255
--0.068804 1.187159 0.000000 255 255 255 255
--0.041637 1.185402 0.000000 255 255 255 255
--0.069687 1.185402 0.000000 255 255 255 255
--0.040984 1.183524 0.000000 255 255 255 255
--0.070339 1.183524 0.000000 255 255 255 255
--0.040579 1.181544 0.000000 255 255 255 255
--0.070744 1.181544 0.000000 255 255 255 255
--0.040440 1.179480 0.000000 255 255 255 255
--0.070883 1.179480 0.000000 255 255 255 255
--0.070744 1.177414 0.000000 255 255 255 255
--0.040579 1.177414 0.000000 255 255 255 255
--0.070339 1.175432 0.000000 255 255 255 255
--0.040984 1.175432 0.000000 255 255 255 255
--0.069687 1.173554 0.000000 255 255 255 255
--0.041637 1.173554 0.000000 255 255 255 255
--0.005116 1.133825 0.000000 255 255 255 255
-0.071185 1.093242 0.000000 255 255 255 255
-0.020447 1.174407 0.000000 255 255 255 255
--0.068804 1.171796 0.000000 255 255 255 255
--0.042519 1.171796 0.000000 255 255 255 255
--0.067711 1.170178 0.000000 255 255 255 255
--0.043613 1.170178 0.000000 255 255 255 255
--0.066424 1.168717 0.000000 255 255 255 255
--0.044900 1.168717 0.000000 255 255 255 255
--0.064961 1.167431 0.000000 255 255 255 255
--0.046362 1.167431 0.000000 255 255 255 255
--0.063343 1.166338 0.000000 255 255 255 255
--0.047981 1.166338 0.000000 255 255 255 255
--0.061585 1.165457 0.000000 255 255 255 255
--0.049739 1.165457 0.000000 255 255 255 255
--0.059707 1.164805 0.000000 255 255 255 255
--0.051617 1.164805 0.000000 255 255 255 255
--0.057726 1.164400 0.000000 255 255 255 255
--0.053597 1.164400 0.000000 255 255 255 255
--0.055662 1.164261 0.000000 255 255 255 255
--0.070883 1.093242 0.000000 255 255 255 255
--0.030292 1.153710 0.000000 255 255 255 255
+-0.121043 1.084839 0.000000 255 255 255 255
+-0.100747 1.247170 0.000000 255 255 255 255
+-0.121043 1.267461 0.000000 255 255 255 255
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+-0.100747 1.105131 0.000000 255 255 255 255
+0.102208 1.105131 0.000000 255 255 255 255
+-0.057147 1.226739 0.000000 255 255 255 255
+-0.053018 1.226740 0.000000 255 255 255 255
+-0.055082 1.226879 0.000000 255 255 255 255
+-0.051037 1.226335 0.000000 255 255 255 255
+-0.059127 1.226335 0.000000 255 255 255 255
+-0.049159 1.225682 0.000000 255 255 255 255
+-0.061005 1.225682 0.000000 255 255 255 255
+-0.047402 1.224800 0.000000 255 255 255 255
+-0.062763 1.224800 0.000000 255 255 255 255
+-0.045783 1.223706 0.000000 255 255 255 255
+-0.064382 1.223706 0.000000 255 255 255 255
+-0.044321 1.222420 0.000000 255 255 255 255
+-0.065844 1.222420 0.000000 255 255 255 255
+-0.043034 1.220958 0.000000 255 255 255 255
+-0.067131 1.220958 0.000000 255 255 255 255
+-0.041940 1.219339 0.000000 255 255 255 255
+-0.068225 1.219339 0.000000 255 255 255 255
+-0.041057 1.217582 0.000000 255 255 255 255
+-0.069107 1.217582 0.000000 255 255 255 255
+-0.040405 1.215704 0.000000 255 255 255 255
+-0.069760 1.215704 0.000000 255 255 255 255
+-0.040000 1.213724 0.000000 255 255 255 255
+-0.070165 1.213724 0.000000 255 255 255 255
+-0.039861 1.211660 0.000000 255 255 255 255
+-0.070304 1.211660 0.000000 255 255 255 255
+-0.070165 1.209594 0.000000 255 255 255 255
+-0.040000 1.209594 0.000000 255 255 255 255
+-0.069760 1.207612 0.000000 255 255 255 255
+-0.040405 1.207612 0.000000 255 255 255 255
+-0.069107 1.205734 0.000000 255 255 255 255
+-0.041057 1.205734 0.000000 255 255 255 255
+-0.004536 1.166005 0.000000 255 255 255 255
+0.071765 1.125422 0.000000 255 255 255 255
+0.021026 1.206587 0.000000 255 255 255 255
+-0.068225 1.203976 0.000000 255 255 255 255
+-0.041940 1.203976 0.000000 255 255 255 255
+-0.067131 1.202358 0.000000 255 255 255 255
+-0.043034 1.202358 0.000000 255 255 255 255
+-0.065844 1.200897 0.000000 255 255 255 255
+-0.044321 1.200897 0.000000 255 255 255 255
+-0.064382 1.199611 0.000000 255 255 255 255
+-0.045783 1.199611 0.000000 255 255 255 255
+-0.062763 1.198518 0.000000 255 255 255 255
+-0.047402 1.198518 0.000000 255 255 255 255
+-0.061005 1.197637 0.000000 255 255 255 255
+-0.049159 1.197637 0.000000 255 255 255 255
+-0.059127 1.196985 0.000000 255 255 255 255
+-0.051037 1.196985 0.000000 255 255 255 255
+-0.057147 1.196580 0.000000 255 255 255 255
+-0.053018 1.196580 0.000000 255 255 255 255
+-0.055082 1.196442 0.000000 255 255 255 255
+-0.070304 1.125422 0.000000 255 255 255 255
+-0.029713 1.185890 0.000000 255 255 255 255
 3 0 1 2
 3 1 3 2
 3 1 4 3
diff --git a/rsc/mesh/icon_video.ply b/rsc/mesh/icon_video.ply
index be0ab96..79b6c7b 100644
--- a/rsc/mesh/icon_video.ply
+++ b/rsc/mesh/icon_video.ply
@@ -12,70 +12,70 @@ property uchar alpha
 element face 80
 property list uchar uint vertex_indices
 end_header
--0.119887 1.034463 0.000000 255 255 255 255
--0.099881 1.254489 0.000000 255 255 255 255
--0.119887 1.254489 0.000000 255 255 255 255
--0.099881 1.234487 0.000000 255 255 255 255
--0.079874 1.234487 0.000000 255 255 255 255
--0.059867 1.254489 0.000000 255 255 255 255
--0.079874 1.254489 0.000000 255 255 255 255
--0.059867 1.214485 0.000000 255 255 255 255
-0.060172 1.214485 0.000000 255 255 255 255
-0.080179 1.254489 0.000000 255 255 255 255
-0.060172 1.254489 0.000000 255 255 255 255
-0.080179 1.234487 0.000000 255 255 255 255
-0.100185 1.234487 0.000000 255 255 255 255
-0.120192 1.254489 0.000000 255 255 255 255
-0.100185 1.254489 0.000000 255 255 255 255
-0.120192 1.034463 0.000000 255 255 255 255
--0.099881 1.214485 0.000000 255 255 255 255
-0.080179 1.214485 0.000000 255 255 255 255
-0.100185 1.214485 0.000000 255 255 255 255
--0.099881 1.194482 0.000000 255 255 255 255
--0.079874 1.214485 0.000000 255 255 255 255
--0.079874 1.194482 0.000000 255 255 255 255
-0.080179 1.194482 0.000000 255 255 255 255
-0.100185 1.194482 0.000000 255 255 255 255
--0.099881 1.174480 0.000000 255 255 255 255
--0.059867 1.184481 0.000000 255 255 255 255
-0.060172 1.184481 0.000000 255 255 255 255
-0.100185 1.174480 0.000000 255 255 255 255
--0.079874 1.174480 0.000000 255 255 255 255
--0.059867 1.104472 0.000000 255 255 255 255
-0.060172 1.104472 0.000000 255 255 255 255
-0.080179 1.174480 0.000000 255 255 255 255
--0.099881 1.154478 0.000000 255 255 255 255
--0.079874 1.154478 0.000000 255 255 255 255
-0.080179 1.154478 0.000000 255 255 255 255
-0.100185 1.154478 0.000000 255 255 255 255
--0.099881 1.134475 0.000000 255 255 255 255
--0.079874 1.134475 0.000000 255 255 255 255
-0.080179 1.134475 0.000000 255 255 255 255
-0.100185 1.134475 0.000000 255 255 255 255
--0.099881 1.114473 0.000000 255 255 255 255
--0.079874 1.114473 0.000000 255 255 255 255
-0.080179 1.114473 0.000000 255 255 255 255
-0.100185 1.114473 0.000000 255 255 255 255
--0.099881 1.094470 0.000000 255 255 255 255
-0.100185 1.094470 0.000000 255 255 255 255
--0.099881 1.074468 0.000000 255 255 255 255
--0.079874 1.094470 0.000000 255 255 255 255
--0.079874 1.074468 0.000000 255 255 255 255
-0.080179 1.094470 0.000000 255 255 255 255
-0.080179 1.074468 0.000000 255 255 255 255
-0.100185 1.074468 0.000000 255 255 255 255
--0.099881 1.054466 0.000000 255 255 255 255
--0.059867 1.074468 0.000000 255 255 255 255
--0.079874 1.054466 0.000000 255 255 255 255
--0.059867 1.034463 0.000000 255 255 255 255
-0.060172 1.074468 0.000000 255 255 255 255
-0.060172 1.034463 0.000000 255 255 255 255
-0.080179 1.054466 0.000000 255 255 255 255
-0.100185 1.054466 0.000000 255 255 255 255
--0.099881 1.034463 0.000000 255 255 255 255
--0.079874 1.034463 0.000000 255 255 255 255
-0.080179 1.034463 0.000000 255 255 255 255
-0.100185 1.034463 0.000000 255 255 255 255
+-0.119887 1.061288 0.000000 255 255 255 255
+-0.099881 1.281314 0.000000 255 255 255 255
+-0.119887 1.281314 0.000000 255 255 255 255
+-0.099881 1.261312 0.000000 255 255 255 255
+-0.079874 1.261312 0.000000 255 255 255 255
+-0.059867 1.281314 0.000000 255 255 255 255
+-0.079874 1.281314 0.000000 255 255 255 255
+-0.059867 1.241309 0.000000 255 255 255 255
+0.060172 1.241309 0.000000 255 255 255 255
+0.080179 1.281314 0.000000 255 255 255 255
+0.060172 1.281314 0.000000 255 255 255 255
+0.080179 1.261312 0.000000 255 255 255 255
+0.100185 1.261312 0.000000 255 255 255 255
+0.120192 1.281314 0.000000 255 255 255 255
+0.100185 1.281314 0.000000 255 255 255 255
+0.120192 1.061288 0.000000 255 255 255 255
+-0.099881 1.241309 0.000000 255 255 255 255
+0.080179 1.241309 0.000000 255 255 255 255
+0.100185 1.241309 0.000000 255 255 255 255
+-0.099881 1.221307 0.000000 255 255 255 255
+-0.079874 1.241309 0.000000 255 255 255 255
+-0.079874 1.221307 0.000000 255 255 255 255
+0.080179 1.221307 0.000000 255 255 255 255
+0.100185 1.221307 0.000000 255 255 255 255
+-0.099881 1.201305 0.000000 255 255 255 255
+-0.059867 1.211306 0.000000 255 255 255 255
+0.060172 1.211306 0.000000 255 255 255 255
+0.100185 1.201305 0.000000 255 255 255 255
+-0.079874 1.201305 0.000000 255 255 255 255
+-0.059867 1.131296 0.000000 255 255 255 255
+0.060172 1.131296 0.000000 255 255 255 255
+0.080179 1.201305 0.000000 255 255 255 255
+-0.099881 1.181302 0.000000 255 255 255 255
+-0.079874 1.181302 0.000000 255 255 255 255
+0.080179 1.181302 0.000000 255 255 255 255
+0.100185 1.181302 0.000000 255 255 255 255
+-0.099881 1.161300 0.000000 255 255 255 255
+-0.079874 1.161300 0.000000 255 255 255 255
+0.080179 1.161300 0.000000 255 255 255 255
+0.100185 1.161300 0.000000 255 255 255 255
+-0.099881 1.141298 0.000000 255 255 255 255
+-0.079874 1.141298 0.000000 255 255 255 255
+0.080179 1.141298 0.000000 255 255 255 255
+0.100185 1.141298 0.000000 255 255 255 255
+-0.099881 1.121295 0.000000 255 255 255 255
+0.100185 1.121295 0.000000 255 255 255 255
+-0.099881 1.101293 0.000000 255 255 255 255
+-0.079874 1.121295 0.000000 255 255 255 255
+-0.079874 1.101293 0.000000 255 255 255 255
+0.080179 1.121295 0.000000 255 255 255 255
+0.080179 1.101293 0.000000 255 255 255 255
+0.100185 1.101293 0.000000 255 255 255 255
+-0.099881 1.081290 0.000000 255 255 255 255
+-0.059867 1.101293 0.000000 255 255 255 255
+-0.079874 1.081290 0.000000 255 255 255 255
+-0.059867 1.061288 0.000000 255 255 255 255
+0.060172 1.101293 0.000000 255 255 255 255
+0.060172 1.061288 0.000000 255 255 255 255
+0.080179 1.081290 0.000000 255 255 255 255
+0.100185 1.081290 0.000000 255 255 255 255
+-0.099881 1.061288 0.000000 255 255 255 255
+-0.079874 1.061288 0.000000 255 255 255 255
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+0.100185 1.061288 0.000000 255 255 255 255
 3 0 1 2
 3 0 3 1
 3 4 5 6
diff --git a/tinyxml2Toolkit.cpp b/tinyxml2Toolkit.cpp
index 55cdd79..94f58c4 100644
--- a/tinyxml2Toolkit.cpp
+++ b/tinyxml2Toolkit.cpp
@@ -81,7 +81,7 @@ void tinyxml2::XMLElementToGLM(XMLElement *elem, glm::mat4 &matrix)
     }
 }
 
-void tinyxml2::XMLSaveDoc(XMLDocument * const doc, std::string filename)
+bool tinyxml2::XMLSaveDoc(XMLDocument * const doc, std::string filename)
 {
     XMLDeclaration *pDec = doc->NewDeclaration();
     doc->InsertFirstChild(pDec);
@@ -92,7 +92,7 @@ void tinyxml2::XMLSaveDoc(XMLDocument * const doc, std::string filename)
 
     // save session
     XMLError eResult = doc->SaveFile(filename.c_str());
-    XMLResultError(eResult);
+    return !XMLResultError(eResult);
 }
 
 bool tinyxml2::XMLResultError(int result)
diff --git a/tinyxml2Toolkit.h b/tinyxml2Toolkit.h
index 66839e4..58bdbf2 100644
--- a/tinyxml2Toolkit.h
+++ b/tinyxml2Toolkit.h
@@ -18,7 +18,7 @@ void XMLElementToGLM(XMLElement *elem, glm::vec4 &vector);
 void XMLElementToGLM(XMLElement *elem, glm::mat4 &matrix);
 
 
-void XMLSaveDoc(tinyxml2::XMLDocument * const doc, std::string filename);
+bool XMLSaveDoc(tinyxml2::XMLDocument * const doc, std::string filename);
 bool XMLResultError(int result);
 
 }