I have same issue (RPi3 with v5.11, roms launched from the USB stick - not sure if that is important). I've tried dozen different disk images always with the same result. After game is launched from ES, screen switches for few seconds showing garbage ASCII characters on the majority of the screen, then it returns to the ES.
I have deleted all log files and launched random game. Only two log files were created. First was es_launch_stdout.log (this one has 0 bytes length) and second was es_launch_stderr.log.
Heres "stderr" content:
Traceback (most recent call last):
File "usr/lib/python2.7/site-packages/configgen/emulatorlauncher.py", line 221, in <module>
exitcode = main(args)
File "usr/lib/python2.7/site-packages/configgen/emulatorlauncher.py", line 154, in main
command = generators[system.config['emulator']].generate(system, args.rom, playersControllers)
File "/usr/lib/python2.7/site-packages/configgen/generators/linapple/linappleGenerator.py", line 82, in generate
if not self.check_resources():
File "/usr/lib/python2.7/site-packages/configgen/generators/linapple/linappleGenerator.py", line 60, in check_resources
OSError: [Errno 1] Operation not permitted