Mame audit help please

[UKShark]

Hi all,

Im new to keeping mame updated and audited.

I wonder if someone could explain what im doing wrong.

 

I downloaded a mame 166 set from a goos source, and then downloaded .166 mame from.

I loaded clrmamepro and pointed it at the mame.exe (double checked it was the .166).

It was a split set, but the end result was clrmamepro said i had about 50 sets missing and a ton of naming problems.

(I didn't allow it to fix anything)

 

Then i downloaded a .166 dat from emulab and loaded that into clrmamepro which showed the same set was spot on.

http://www.emulab.it/rommanager/datfiles.php?category=2

I checked clrmamepro was the latest version, so why does using the mame.exe to generate the .dat show errors (what is the emulab .dat generated from)

 

I want to keep  nice neat updated mame set, but dont understand the small differences in .dat files, so any help would be ace.

 

Thanks in advanced to all