diff --git a/src/slic3r/GUI/3DBed.cpp b/src/slic3r/GUI/3DBed.cpp
index 4319a28cf..7572d4fc4 100644
--- a/src/slic3r/GUI/3DBed.cpp
+++ b/src/slic3r/GUI/3DBed.cpp
@@ -223,7 +223,10 @@ bool Bed3D::set_shape(const Pointfs& bed_shape, const double max_print_height, c
 
 #if ENABLE_LEGACY_OPENGL_REMOVAL
     m_contour = ExPolygon(Polygon::new_scale(bed_shape));
-    m_polygon = offset(m_contour.contour, (float)m_contour.contour.bounding_box().radius() * 1.7f, jtRound, scale_(0.5)).front();
+    const BoundingBox bbox = m_contour.contour.bounding_box();
+    if (!bbox.defined)
+        throw RuntimeError(std::string("Invalid bed shape"));
+    m_polygon = offset(m_contour.contour, (float)bbox.radius() * 1.7f, jtRound, scale_(0.5)).front();
 
     m_triangles.reset();
     m_gridlines.reset();
diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 96959f33b..5764b283c 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -538,7 +538,7 @@ void MainFrame::update_layout()
     case ESettingsLayout::GCodeViewer:
     {
         m_main_sizer->Add(m_plater, 1, wxEXPAND);
-        m_plater->set_bed_shape({ { 0.0, 0.0 }, { 200.0, 0.0 }, { 200.0, 200.0 }, { 0.0, 200.0 } }, 0.0, {}, {}, true);
+        m_plater->set_default_bed_shape();
         m_plater->get_collapse_toolbar().set_enabled(false);
         m_plater->collapse_sidebar(true);
         m_plater->Show();
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index dd47325b5..ccaf28ec0 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -5477,10 +5477,27 @@ void Plater::load_gcode(const wxString& filename)
     p->gcode_result = std::move(processor.extract_result());
 
     // show results
-    p->preview->reload_print(false);
+    try
+    {
+        p->preview->reload_print(false);
+    }
+    catch (const std::exception&)
+    {
+        wxEndBusyCursor();
+        p->gcode_result.reset();
+        reset_gcode_toolpaths();
+        set_default_bed_shape();
+        p->preview->reload_print(false);
+        p->get_current_canvas3D()->render();
+        MessageDialog(this, _L("The selected file") + ":\n" + filename + "\n" + _L("does not contain valid gcode."),
+            wxString(GCODEVIEWER_APP_NAME) + " - " + _L("Error while loading .gcode file"), wxOK | wxICON_WARNING | wxCENTRE).ShowModal();
+        set_project_filename(wxEmptyString);
+        return;
+    }
     p->preview->get_canvas3d()->zoom_to_gcode();
 
     if (p->preview->get_canvas3d()->get_gcode_layers_zs().empty()) {
+        wxEndBusyCursor();
         //wxMessageDialog(this, _L("The selected file") + ":\n" + filename + "\n" + _L("does not contain valid gcode."),
         MessageDialog(this, _L("The selected file") + ":\n" + filename + "\n" + _L("does not contain valid gcode."),
             wxString(GCODEVIEWER_APP_NAME) + " - " + _L("Error while loading .gcode file"), wxOK | wxICON_WARNING | wxCENTRE).ShowModal();
@@ -6646,6 +6663,11 @@ void Plater::set_bed_shape(const Pointfs& shape, const double max_print_height,
     p->set_bed_shape(shape, max_print_height, custom_texture, custom_model, force_as_custom);
 }
 
+void Plater::set_default_bed_shape() const
+{
+    set_bed_shape({ { 0.0, 0.0 }, { 200.0, 0.0 }, { 200.0, 200.0 }, { 0.0, 200.0 } }, 0.0, {}, {}, true);
+}
+
 void Plater::force_filament_colors_update()
 {
     bool update_scheduled = false;
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index 9dc9f6316..ff750d561 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -399,6 +399,7 @@ public:
 
 	void set_bed_shape() const;
     void set_bed_shape(const Pointfs& shape, const double max_print_height, const std::string& custom_texture, const std::string& custom_model, bool force_as_custom = false) const;
+    void set_default_bed_shape() const;
 
     NotificationManager * get_notification_manager();
     const NotificationManager * get_notification_manager() const;