@mitu I suppose this function stretch_fix_raspbiantools (in ~/RetroPie-Setup/scriptmodules/supplementary/raspbiantools.sh) won't have done anything since I'm not on stretch & never have been (Pi 4), is that right? And besides that, looks like it's, as you said, just an update && dist-upgrade, which is what already I did a week ago. No harm no foul then, eh?

the amount of misinformation about the memory split is unreal. if emulationstation loads you have enough.