You don't follow the official storing methods. If you work with not-compressed sets you need to store them in subfolders.

Again:

rompath\setname\file 1...file n for not archived sets (and in your case n = 1 since the sets all got only 1 rom)
rompath\setname.zip (.7z/.rar) for archived sets.

In your example datfile you got a set named
"!Mario (2000-11-19)(Dokokalaki)(Jp)[h][Super Mario Bros.]"
with a rom named
"!Mario (2000-11-19)(Dokokalaki)(Jp)[h][Super Mario Bros.].nes"

So you either put an archive in your rompath or you create a subfolder "!Mario (2000-11-19)(Dokokalaki)(Jp)[h][Super Mario Bros.]" in your rompath and you put the rom "!Mario (2000-11-19)(Dokokalaki)(Jp)[h][Super Mario Bros.].nes" into this subfolder.

Of course the rebuilder could do that for you automatically but the better way is to keep them compressed.


Roman Scherzer