Hi Jason,
I'm not sure whats the problem but my Mame playlists that i had before are not changing to the correct theme, for example if i go into my Midway Classics playlist, it reverts back to the Mame theme background, same issue with all the other mame playlists, it's working fine in Unified Redux 1.2 but not ver 1.4, each playlist had it's own background.
Platform View
Game List View