UE4 4.20 crashes everytime I open a static mesh to convert into a destructable

Anytime I try to convert a static mesh into a DM the editor crashes… I have sent many reports

  1. Enabled APEX Destruction plugin
  2. Right click on mesh → Create Destructible Mesh
  3. Choose Cell Site Count (Don’t use more than 1000)
  4. Click Fracture Mesh
  5. Save. Voila!
    If you have any troubles i suggest you to try it on simple meshes, like cube to find if it’s working at all for you

All the way up to step 2 then it crashes

I’m having the same problem, as soon as I click on Create Destructible mesh, Unreal crashes

using 4.20 btw