Ensure ALL lights are baked...

... Not just the ones on the same layer(s) as the object. :/

korman/helpers.py

@@ -36,7 +36,10 @@ def ensure_object_can_bake(bo, toggle):
     """Ensures that we can use Blender's baking operators on this object. Side effect: also ensures
        that the object will enter edit mode when requested."""
     scene = bpy.context.scene
-    toggle.track(scene, "layers", bo.layers)
+    # we don't toggle.track this because it actually updates some kind of Blender internals...
+    # therefore the old and new value are equal. the export operator will take care of this for us
+    scene.layers = (True,) * len(scene.layers)
+
     toggle.track(bo, "hide", False)
     toggle.track(bo, "hide_render", False)
     toggle.track(bo, "hide_select", False)

korman/operators/op_export.py

@@ -121,11 +121,16 @@ class _UiHelper:
     def __enter__(self):
         self.active_object = bpy.context.object
         self.selected_objects = bpy.context.selected_objects
+        self.layers = tuple(bpy.context.scene.layers)
 
     def __exit__(self, type, value, traceback):
         for i in bpy.data.objects:
             i.select = (i in self.selected_objects)
-        bpy.context.scene.objects.active = self.active_object
+
+        scene = bpy.context.scene
+        scene.objects.active = self.active_object
+        scene.layers = self.layers
+        scene.update()
 
 
 # Add the export operator to the Export menu :)