It seems RomCenter 3.7.1 is not compatible with the updated XML structure of the newest MAME releases. This is a possible work-around:
1. Download and install Romulus from
http://romulus.net63.net/.
2. Start Romulus and select Add DAT from MAME based EXE.
3. Go to the scanner tab.
4. Select the Fixdat options - sixth icon in the row at the top left.
5. Import the resulting file into Romcenter.
It seems to have been worked. I tested with MAME 0.161, the last version before the merge with MESS.
It seems RomCenter 3.7.1 is not compatible with the updated XML structure of the newest MAME releases. This is a possible work-around:
1. Download and install Romulus from [url]http://romulus.net63.net/[/url].
2. Start Romulus and select Add DAT from MAME based EXE.
3. Go to the scanner tab.
4. Select the Fixdat options - sixth icon in the row at the top left.
5. Import the resulting file into Romcenter.
It seems to have been worked. I tested with MAME 0.161, the last version before the merge with MESS.