- the Plugins object combo boxes are no longer updated on object selection on Project tab generally but only for the Plugin that is current, if any

- in Corner Markers Plugin I added a new feature, ability to insert existing markers into external objects. Finished the work for external Gerbers and work in progress for the external Geometry

appPlugins/ToolNCC.py

@@ -516,16 +516,23 @@ class NonCopperClear(AppTool, Gerber):
             return
 
     def on_object_selection_changed(self, current, previous):
-        try:
-            name = current.indexes()[0].internalPointer().obj.options['name']
-            kind = current.indexes()[0].internalPointer().obj.kind
+        found_idx = None
+        for tab_idx in range(self.app.ui.notebook.count()):
+            if self.app.ui.notebook.tabText(tab_idx) == self.ui.pluginName:
+                found_idx = True
+                break
 
-            if kind in ['gerber', 'geometry']:
-                self.ui.type_obj_radio.set_value(kind)
+        if found_idx:
+            try:
+                name = current.indexes()[0].internalPointer().obj.options['name']
+                kind = current.indexes()[0].internalPointer().obj.kind
 
-            self.ui.object_combo.set_value(name)
-        except Exception:
-            pass
+                if kind in ['gerber', 'geometry']:
+                    self.ui.type_obj_radio.set_value(kind)
+
+                self.ui.object_combo.set_value(name)
+            except Exception:
+                pass
 
     def on_toggle_all_rows(self):
         """