JFD, thanks so much for updating YnAEMP! I play this pretty much exclusively.
I was wondering about the resource bug with aluminum - it was basically not appearing when I'd checked all of the special resource options (large deposits, special starts, true placement, riche amount, etc.). When I changed some of those options (no special starts or true placement, and only normal amount), then aluminum ended up showing up again.
I found a similar dynamic to exist with the More Luxuries mod - the prior set of options limited their appearance, while the latter included them healthily.
Also, of course, bison and cocoa weren't appearing, but you've remedied that (though the latter set of options I just mentioned DID include them as well).
I was playing with 62 civilizations, if that helps at all, on the giant map. Was using whoward69's .dll mod because I wanted to use his other mods as well.