Many problems using the new Cardboard unity3D integration

Hello, I'm hoping someone can help me out, as I've recently upgraded my Unity installation to 5.6 and it has just killed my support for GoogleVR.

I am now not able to compile my Xcode project because of getting a Mach-0 linker error. I've tried all the possible architectures. I don't know what to do :(

Also is it possible to have a unity app allow GearVR but not require you to put the headset on immediately? I'd like the user to be able to design a 3D room and then choose to later activate GearVR.

-Onion