Unity iOs project gets crashed when returning from internal method UnityUpdateDisplayList()

Can't find what caused this, maybe somebody knows?

Unity 5.2.1f1, iPad mini 2, iOs 8.4

I have Bad Access Error in this line of DisplayManager.mm:

(BOOL)displayAvailableUIScreen*)targetScreen; { return self[targetScreen] != nil; }

because of NIL in the argument.

It seems when calling UnityUpdateDisplayList() method in Unity, iOs gets back null result.

Can somebody help?