I've recently upgraded my unity & vuforia from unity 5.6 to unity 2017.3 (for all the cool new features from vuforia). Unfortunately digital eye-wear (now called Phone+Viewer) video see-through doesn't work anymore, I would get a black screen (oddly enough it can still track imagetargets and the game still runs). If it's not on digital eyewear it works and I see the video background.
I made sure all the settings are the same when I converted it over.
I've tested in Unity and on my Samsung S6+S8
Any tips and/or solutions on where I should look?