Oh, that's actually due to an update to SugarCube. Since it's only a console warning, I haven't considered it a high priority to fix.
Perhaps I am having a different issue then. Any link I click in the examples throws that error and then remains on the same page/passage. I am also getting errors about failures to download various resources. I will try again when I am on my PC with my ad-block and other security settings disabled and report back :)