[Vuforia][nvidia shield tv][android tv] Using Vuforia on nvidia Shield TV

Hi, I'm trying to use the Vuforia SDK on the nvidia Shield TV with a usb webcam.
My project runs fine on iOS, but on Shield TV vuforia fails to initialize.

I created a test apk that uses a webcam without vuforia, and the app successfully got the webcam image. So Shield TV does have an access to webcams.
I've searched here and there, Vuforia dev portal etc. but couldn't find a solution. Can anyone give an advice?

I'm using Vuforia 6.2 on a Unity 5.6.0f3, macOS Sierra 10.12.4
Shield TV p2897 , Ver. 7.0

Thanks!

 

Woops, it worked! It turned out that the merged manifest file had some issues.
nvidia shield tv can use vuforia! Great!