And... it finds ROMs but not CHDs? Where do they live now?
[Edit:] also Sound Samples... doesn't seem to find them.
It seems like the Documents/MacMAME folder thing is only halfway working; Artwork, Configs, NVRAMs and ROMs works from there, but Categories, GL overlays, and Screenshots still have to be next to the application. I can't get CHDs or Samples to work anywhere.