--- a/src/ui/polygonobjecteditor.cpp Wed Mar 18 15:52:16 2020 +0200 +++ b/src/ui/polygonobjecteditor.cpp Wed Mar 18 15:54:30 2020 +0200 @@ -38,7 +38,7 @@ void PolygonObjectEditor::updateNumRows() { const ldraw::Object* object = model->get(this->storedObjectId); - const int numPoints = object->numPoints(); + const int numPoints = object != nullptr ? object->numPoints() : 0; for (int i = 0; i < countof(this->vec3Editors); i += 1) { Vec3Editor& editor = *this->vec3Editors[i];