I installed lr-genesis-plus-gx via the RetroPie menu in Emulation Station. I launch a Genesis game and press a button before it starts to get to the emulator menu. When I try to change the default emulator for Mega Drive, it very briefly shows a message “Couldn’t open temporary file /opt/retropie/configs/megadrive/***** permission denied” (The ****** seems to be a random string of text each time). However I am able to change other system’s emulators without any issues.
I have reset ownership/permissions of /home/pi/RetroPie/roms via Retropie-setup in the EmulationStation menu, this didn’t fix it. How can I change it?