Sega Genesis games not loading...

[vicfrankenstein]

So I can't get Sega Genesis games to load in retroarch or launchbox.  It goes through the motions, loads the joysticks, everything, then just closes and goes back to launchbox.

 

Here are the settings.

Any ideas?  It's in an Arcade cab with joysticks if that matters at all.  

[neil9000]

Two things here, one you do not need -fullscreen for Retroarch, in fact that may break it, and two i see your core entry's platform name is "Sega Megadrive (Japan)" is that EXACTLY what the platform is called in Launchbox? and also you are trying to use the picodrive core, i'd highly recommend the genesis_gx core instead, it's far better.