Editor crash with "GPUSkinCache.cpp"

Ok, I did some more testing.
Currently unable to create a new project, but I deleted all config files and just tested the skeletal meshes one by one without crash, they only crashed in my blueprint.
I then was able to pin point the issue to the lead pose component I use to control all skeletal mesh animations in that blueprint.
Was able to recreate the issue with a fresh blueprint actor AND a skeletal mesh using a different skeleton, so I´m pretty sure there is something wrong with that lead pose component node that doesn´t like GPU skin cache…

I wasn´t able to test in an empty/new 5.4 project at the time, but I tested in a 5.3 project and it didn´t crash there.
Very simple to recreate:

  1. Create blueprint actor.
  2. Add two skeletal meshes (name one leader, one follower)
  3. In the constructionscript, add a “Set Leader pose component”.
  4. Assign leader and follower.
  5. Compile.
  6. Hit “Play in editor”.
  7. You should crash.

If anyone could confirm this happens not just for me/this project when using 5.4, I would really appreciate it!