[MAME] Metal Slug 6 (not MS3 bootleg) not working

So I tried the Metal Slug 6 rom (not the MS3 bootleg) on MAME 64bit v.146, but it says it's not working and I'm missing a ROM or CHD.Can anyone help?

bump

omgwut · #1I'm missing a ROM or CHD.

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Obviously your ROM is fake or invalid. Download another one.

Replying to #3

I downloaded the ROM from 2 different sites already. The rests are the MS3 bootlegs.

last bump attempt