Have had this happen a few time after I have used FTP to add ROMs to the SNES (and NES) ROM folder.

If I add a few ROMS in via FTP it's all OK. But if I drop a large bunch of ROMs in and try to run the emulator it tries then just drops back to the PiMAME menu, once it does this I can not make it run again. So I end up erasing the SD card and start again.

The only thing I can see is on the time I move a large amount I may get and FTP error Broken Pipe

What can trigger an emulator to stop launching and how would I fix it?