Arduboy Games on the GameShell

did you tried to rebuild emulator by yourself?
if ‘yes’, and it still not working,
make sure, you switched to the Lima GPU driver via Settings->GPU Driver Switch->Lima driver (with Fbturbo, emulator either running too slow, or not starting at all).

if it still not working,
try restart your GameShell, make attempt to start some ArduBoy game, then SSH to GameShell, and run a command

cat /tmp/x.log

paste the result here