Anytime a user tries to play or load a scene that is using Speech (Dictation, Grammar, Keyword) an exception gets thrown in the console log. Speech is not supproted in simulation, but this error might need to be changed into a warning to avoid user confusion.

Notes:
RS1
RS2
RS3

2017.1.0b10
5.6.1p4

Assertion failed: Assertion failed on expression: 'NULL != cur'
UnityEngine.Windows.Speech.PhraseRecognitionSystem:Shutdown()
DictationControl:Start() (at Assets/Scripts/Tests/Grammar/DictationSandbox/DictationControl.cs:19)

Repro Steps:
1.) Create or load nay Mixed Reality project that uses speech
2.) Set up for Mixed Reality
3.) Press play

Actual:
There is a noisy exception when trying to use speech in simulation