It's a net new installation of Launchbox where I'm trying to import Apple II or Atari 800, or Armstrad CPC, all platforms natively supported by Launchbox.
I've tried with and without the checkbox enabled for 'Search for game information in the local metadata database'
These have been my defaulting settings for other imported roms:
I've select MAME as the emulator since it technically should be able to support it, and nothing shows up, consistently.
Instead of using MAME I selected retroarch, and now it shows up to import files (even though retroarch doesn't do Apple II? (supports it via a mame library in retroarch apparently)
But so far using MAME for anything that's not Arcade seems to be the evil do-er.