This is nothing to do with Launchbox, it is just how MAME is, even if just using the MAME emulator by itself, You cannot just download random MAME roms and expect them to work, that's just not how it is. MAME roms come in packs that are numbered, 0.233, 0.234, 0.235 etc and the emulator itself is also versioned with the same numbers, you match your romset to the emulator, got a 0.232 romset, use the 0.232 version of the emulator, roms are only ever guaranteed to work with the matching version of the emulator, they may work in other versions, but they likely will not a lot of the time.