Augmented Reality for UE4

, have just updated plugin/unreal to latest versions (4.16.1 and 1.8) and am getting “webcam init error” on the ARToolKitAdvanced map/scene (fresh installation, no old files). Using macOS Sierra and iPad Air 2. I investigated deploying artoolkit test scenes directly from XCode and it works - so I’m guessing something is going wrong in the unreal wrapper/plugin side. Are you aware of any issues in the latest releases? I have previously had success with prior versions of the engine and your plugin…

EDIT: I can also confirm that the ARToolkit Simple map also does not work (webcam init error). I followed the instructions on your website and made no modifications at all. iOS v 10.3 on the iPad Air 2, and macOS Sierra for development computer, Unreal Engine 4.16.1. Am I missing something here? I’ve previously in Unreal 4.9 had this plugin working fine…