When I create a profile for MAME versions 82, 83, and 84, I get an error mesage regarding some of the CHD files that I don't understand. Can you explain what the messages mean?

MAME 82 has some sort of problem with:
sfrushrk/sfrushrk.chd
hyprdriv/hyprdriv.chd

MAME 83 has some sort of problem with:
hyprdriv/hyprdriv.chd

MAME 84 has some sort of problem with:
hyprdriv/hyprdriv.chd

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