Not a mod card. Get overrides here: https://mega.nz/file/sgpG2BqR#hI3FzeEE5hMELjNgfLGk5WRu8Qp3E5qOaMB4GCyyZac If you have an older version of this card overwrite the previous files with these new overrides.

I keep getting crashes with Miki. Any advice that might help?

It seems override folder lacks some files (probably) which causes crashes, or that's what I suppose at least. I'm not sure if he uses the same clothes overrides as his sister, but if no and if he wears the same clothes as on his Card Face image, then override folder lacks these files. That's only my guess however.

Will the card be updated so it doesn't crash? :(