Crash when turning on DirectShadow CapsuleShadow

Apparently turning on Capsule DirectShadow instantly crashes the editor.
However :

  1. turning them on after it’s being placed in the world wouldn’t crash
  2. Indirect Shadow works fine.
  3. have tried on several mesh . Created a new BP class inheriting from native Character. Still crash.
  4. Unable to reproduce on a new blank project. However, please note that I did not make any changes to the native character as I am not using compiling from source.

Is there any clue of where I should start looking as the cause of it?

I’ve attached log files . but the cause seems to be related to ;

[2016.04.01-06.08.15:975][870]LogWindows:Error: === Critical error: ===
Assertion failed: (GIsCriticalError || !NumMarks) [File:D:\BuildFarm\buildmachine_++UE4+Release-4.11\Engine\Source\Runtime\Core\Public\Misc\MemStack.h] [Line: 90]

[link text][2]

Hello,

I have been able to reproduce this crash, and have entered a bug report (UE-28992). Thank you for your report. I will provide updates on this issue as they become available.

Have a great day