Generating Hair Cards From Groom Crashing

I am trying to follow the steps outlined in Epic’s Hair at a strand level video (starting at 22:00) to generate lod2 cards (using procedural generation) for the metahuman groom Hair_S_Messy. It says it is generating and then crashes when the saving packages notification pops up.

  1. Has anyone gotten the metahuman grooms to generate procedural cards in ue5?
  2. Does this feature only work if you have a source .abc hooked into the source path or is the uasset groom sufficient info?