I'm just starting to setup Launchbox.
On Atari 2600, I'm using the stella_libretro core through retroarch.
When I launch a game, I hear startup sounds from the emulator but the screen goes black.
I've played the games successfully using stella from the decktop.
additional info: retroarch 1.9.0 Launchbox 11.9 Stella 6.5.1
any help would be appreciated.