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Unity 5.6.0f3 + Vuforia 6.2.10 + Android -> Blank screen

I'm using Vuforia 6.2.10 to render some models on markers. It worked until I upgraded to Unity 5.6.0f3 this weekend. On Android I get a black screen on the AR Camera. 

I don't see any errors, when i check the logs It appears that he detects the markers etc.