Hello,
I just installed RecalBox on a brand new Raspberry Pi 3, with:

• A 16gb sdcard for the system
• A 16gb external usb drive for the roms
• A Logitech F710 controler

I didn't change anything in the standard configuration, but for every rom (roms from standard package) I try to run, there is a blank screen then back to the list of games.

The logs look like this:
[2020/03/18 23:36:07.996] (INFO ) : Attempting to launch game...
[2020/03/18 23:36:07.996] (INFO ) : Shutting down SDL AUDIO
[2020/03/18 23:36:08.401] (INFO ) : Available and configurated : Logitech Gamepad F710
[2020/03/18 23:36:08.401] (INFO ) : No config for player 0
[2020/03/18 23:36:08.401] (INFO ) : So i set Logitech Gamepad F710 for player 0
[2020/03/18 23:36:08.401] (INFO ) : No config for player 1
[2020/03/18 23:36:08.401] (INFO ) : No config for player 2
[2020/03/18 23:36:08.401] (INFO ) : No config for player 3
[2020/03/18 23:36:08.401] (INFO ) : No config for player 4
[2020/03/18 23:36:08.401] (INFO ) : Configure emulators command : -p1index 0 -p1guid 030000006d0400001fc2000005030000 -p1name "Logitech Gamepad F710" -p1nbaxes 4 -p1devicepath /dev/input/event0
[2020/03/18 23:36:08.401] (INFO ) : Controllers config : -p1index 0 -p1guid 030000006d0400001fc2000005030000 -p1name "Logitech Gamepad F710" -p1nbaxes 4 -p1devicepath /dev/input/event0
[2020/03/18 23:36:08.498] (INFO ) : python /usr/lib/python2.7/site-packages/configgen/emulatorlauncher.pyc -p1index 0 -p1guid 030000006d0400001fc2000005030000 -p1name "Logitech Gamepad F710" -p1nbaxes 4 -p1devicepath /dev/input/event0 -system mastersystem -rom /recalbox/share/roms/mastersystem/Pong\ Master\ 4k.sms -emulator default -core default -ratio auto
[2020/03/18 23:36:08.798] (WARN!) : ...launch terminated with nonzero exit code 256!

Can you please help?

Eric