LaunchBox for Android 0.40 is out now with the following:
Added a Search option to games lists via the top menu
Fixed an issue where game emulator settings overrides were not working properly
Fixed an emulator settings potential crash issue with the MSX, MSX2, and MSX2+ platforms
I believe this should fix the issues with the new game emulator override settings that some users were running into, as well as the emulator settings crash with MSX platforms.
As far as Neo Geo not downloading any art, I looked into this, and unfortunately the LaunchBox Games Database just doesn't really have much art (or games for that matter) for the SNK Neo Geo MVS platform, which is why nothing is being downloaded: https://gamesdb.launchbox-app.com/platforms/games/210
If you import as SNK Neo Geo AES instead, there is a lot more art available. I'm no expert when it comes to the differences between the two platforms, though (other than the fact that one is for home and one is for arcade), so I'm not sure if it would make sense to copy the games and media from AES to MVS. My hunch though is that that probably wouldn't be a good idea. Thoughts?