Editor crashes when an instance is added in HISM component in level editor

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1

I have been facing this issue after updating to 4.17.2.

Unreal editor crashes when i try to add an instance inside level editor.

Editor also crashes,when i try to duplicate a c++ actor class with HISM component,in level editor by ALT dragging it.
HISM component should have some instance for this crash to happen.

Is this related to UE-50348 ?

Because,it is giving me same error as mentioned there.

Steps to reproduce the crash in bp:

  1. Create an actor blueprint.
  2. Place it in level and add a HISM component.
  3. Select the mesh and add an instance.

Steps to reproduce the crash while duplicating in editor:

  1. Create an actor c++ class and add a scene component and make it as root component.
  2. Add a HISM component and add some instance.
  3. Create a blueprint from this class and place it in level
  4. ALT drag it to duplicate it.This is where crash happens.

I am sharing a link to my test project.

Thank you.

[Test.zip][1]

2

Hey,

I reproduced your steps in the project you attached and got it to crash with both of them. I tried them again in 4.18 and they did not cause a crash. I checked UE-50348 and it is closed since it was fixed in the next version, so 4.18 in this case. Give it a try in 4.18 and let me know if you have any issues.

Thanks

3

It is working in 4.18.
Thank you,.