I recently came across a problem which I've been unable to resolve.
Starting with MAME 0.196, I keep getting the following error when scanning the software lists for the "Sega Dreamcast GD-ROMs":
Chaos Field (Jpn, Sega Direct) [folder: cfieldsd - parent: cfield - size: 0]
missing set: Chaos Field (Jpn, Sega Direct)
Chaos Field (Jpn, Sega Direct, Rev. 1) [folder: cfieldsd1 - parent: cfield - size: 0]
missing set: Chaos Field (Jpn, Sega Direct, Rev. 1)
This happens when the merge mode is set Split Sets.
Please note that I am using the xml from the MAME's hash folder as the datfiles to be scanned for software lists. Those datefiles are all selected within cmpro and scanned in batch mode using the split set option under the scanner tab.
If I instead change the merge mode to merged sets, the scanning process is successful and no error are returned but I would prefer to keep the merged mode consistent across all software lists.
This problem also exist with MAME 0.197 but did not exists with MAME 0.195 and prior versions.
Help would be greatly appreciated.