> > Typo: you've certainly corrected by yourself, but it is actually auto-save-list that is created under .emacs.d,
> > not auto-save-list-file-prefix
> It's not a typo: auto-save-list-file-prefix is a defcustom from whose

I mean: the directory that is created under ".emacs.d/' is not named "auto-save-list-file-prefix", but "auto-save-list"