[Semi-Solved] Crash: Receiving unhandled NULL exception. Unity 5.3.4f1

Hello guys,

The new crash started to occur today on EL Capitan OSX. Yesterday the same build worked nicely. No OS updates were installed. Currently, the app starts sometimes and sometimes does not. OSX restart does not help. On other EL Capitan and Yosemite Macs the same app works fine.

The error occurs whatever app is built on the windows machine or on Mac OSX From my point of view the error is related more to OS Graphics subsystem than to the Unity libraries.

My App graphics settings you can see on attached image. I use Unity 5.3.4f1 Pro version.

What could it be? Where to dig?

I attached system.crash.txt, also there is Player.log file with crash info:

 

New information!
The cause was the external display. When it is unplugged the app works fine!
Devs please pay some attention to this fact if possible.