diff --git a/apps/multi_view_tls_registration/multi_view_tls_registration_gui.cpp b/apps/multi_view_tls_registration/multi_view_tls_registration_gui.cpp
index 64527c62..6fcc7b04 100644
--- a/apps/multi_view_tls_registration/multi_view_tls_registration_gui.cpp
+++ b/apps/multi_view_tls_registration/multi_view_tls_registration_gui.cpp
@@ -1491,6 +1491,8 @@ std::string saveSession()
     }
     else{
         std::cout << "saving canceled" << std::endl;
+
+        return "";
     }
 }
 
@@ -2135,8 +2137,6 @@ void display()
     }
 
     int prev_index_pose = session.control_points.index_pose;
-    if (session.control_points.is_imgui)
-        session.control_points.imgui(session.point_clouds_container, rotation_center);
 
     if (prev_index_pose != session.control_points.index_pose)
     {
@@ -2162,15 +2162,18 @@ void display()
         camera_transition_active = true;
     }
 
-    if (session.ground_control_points.is_imgui)
-        session.ground_control_points.imgui(session.point_clouds_container);
-
     ImGui_ImplOpenGL2_NewFrame();
     ImGui_ImplGLUT_NewFrame();
     ImGui::NewFrame();
 
     ShowMainDockSpace();
 
+    if (session.control_points.is_imgui)
+        session.control_points.imgui(session.point_clouds_container, rotation_center);
+
+    if (session.ground_control_points.is_imgui)
+        session.ground_control_points.imgui(session.point_clouds_container);
+
     if (!session.control_points.is_imgui)
     {
         if (!is_loop_closure_gui)
@@ -2547,7 +2550,7 @@ void display()
                             save_all_to_las(session, output_file_name, false);
                     }
                     if (ImGui::IsItemHovered())
-                        ImGui::SetTooltip("To export in full resolution, close the program and open again, unmark 'simple_gui', unmark 'downsample during load'");
+                        ImGui::SetTooltip("To export in full resolution, close the program and open again and unmark 'downsample during load' before loading session");
 
                     if (ImGui::MenuItem("Separate global scans (laz)"))
                     {
diff --git a/core/src/pfd_wrapper.cpp b/core/src/pfd_wrapper.cpp
index 2d733185..385cbc13 100644
--- a/core/src/pfd_wrapper.cpp
+++ b/core/src/pfd_wrapper.cpp
@@ -8,10 +8,9 @@ namespace mandeye::fd{
   {
       auto sel = OpenFileDialog(title, filter, false);
       if (sel.empty())
-      {
         return "";
-      }
-      return sel.back();
+
+      return std::filesystem::path(sel.back()).lexically_normal().string();
   }
 
   std::vector<std::string> OpenFileDialog(const std::string& title, const std::vector<std::string>&filter, bool multiselect)