- remade the Properties Tool such that it works with the new Gerber data structure in the obj.apertures. Also changed the view for the Gerber object in Properties

- fixed issue with false warning that the Gerber object has no geometry after an empty Gerber was edited and added geometry elements

flatcamEditors/FlatCAMGrbEditor.py

@@ -3522,8 +3522,13 @@ class FlatCAMGrbEditor(QtCore.QObject):
             new_poly = MultiPolygon(poly_buffer)
             new_poly = new_poly.buffer(0.00000001)
             new_poly = new_poly.buffer(-0.00000001)
-            grb_obj.solid_geometry = deepcopy(new_poly)
 
+            try:
+                _ = iter(new_poly)
+            except TypeError:
+                new_poly = [new_poly]
+
+            grb_obj.solid_geometry = deepcopy(new_poly)
             grb_obj.follow_geometry = deepcopy(follow_buffer)
 
             for k, v in self.gerber_obj_options.items():