"on demand resources" not work (Xcode instantly crashes)

Hello!

I have a problem with On Demand Resources, Xcode project instantly crashes when I try open "Resource Tags". But if don't open that tab, compiling will Ok

How fix it?

Anyone have same problems?

@JoshPeterson, @David Berger may be you can help me?

P.S.:
Xcode version 7.2.1 (7C1002)
Unity: 5.3.3p1

Ticket Number: 776489

P.P.S:
also if I try upload my app to TestFlight I got...

"on demand resources" not work (Xcode instantly crashes)