You can have both, geometry generated by your definition as well as objects imported with ShapeDiver Geomtry Input. The blank screen suggests that something went wrong in the script logic. Please review your definition or share a minimal version so we can have a look. Keep in mind that the import component currently supports only DXF and OBJ but more input/output formats will be available in the near future. These resources will help you to set up your model correctly: