I am in the process of finishing my RetroPie build on a Rpi2 and I am tackling the MAME section last.
And I am at a loss of how to rebuild the romset for 0.139, which is the compatible set for the lr-mame2010 emulator.
If I am not mistaken, I would use the rebuilder option to update 0.139 with XXX set? And I would rebuild from, say .168 then .16x and keep going backwards?
In using clrmamepro, would I load the 0.139 DAT file and set the source folder of XXX romset and use the ORIGINAL .139 set as the destination folder, with all the roms still in it?
Is this the best approach?