For some reason, a lot of my roms won't import unless I try them individually. I have my roms organized by system, and the system folders have subfolders (hacks, homebrew, etc). Each rom is stored in an archive, with the archive in its own subfolder (example: "Sega - Genesis\Sonic the Hedgehog\Sonic the Hedgehog (USA, Europe).zip").
When I try to import a system folder, sometimes it works fine, sometimes it only imports some of the subfolders, and sometimes (like with FDS or Game Boy), it won't import anything. As far as I can tell, there's no pattern among folders that won't import. I know Launchbox detects roms in these folders since I'm able to successfully import them one at a time. I've also tried reinstalling Launchbox, but nothing changes. What's going on?