Hi @ejmde, the hand-eye coordination scene and Dev Tools should work, both with native Vive and Knuckles controllers (we just tried using both Unity 2018.2.5f1 and Unity 2019.4.12f1.
We would suggest trying to re-import the SDK (deleting any old contents first) and then see if it works. Additionally please let us know what Unity version and pipeline you are using and if you receive any error messages.
The Missing TobiiController is odd (hence re-importing, because if that is missing, other components might be too), but for clarity, this prefab is only for visualization purposes and nothing else. Lastly, I am afraid we don’t give out any source code for showcases right now, unfortunately. Best Wishes.