Hi, I see what you mean and yes I can select the folder that I have created in Iphoto (2012, 2011, 2010 etc) in preferences but still Apple TV is not showing these folders but looks directly through them. I have then a very long list of all the the different Albums (aprox 50 per year) that are in these folders The question is, is there a way that Apple TV shows these folders instead of directly the albums? Funnily for the videos (outside of Iphoto) I have the same system and it works fine on Apple TV. Thanks anyway for your help.
There seems to be no real solution, but I have discovered a work around which I have tested. The photo albums themselves won't live in separate folders, but you can create an album with the same name as your folder with a single photo in it, so that the albums are separated. I also like to add the year first to chronologically order them. I know that this may take a while as you have so many photos, but I hope that helps as I was having the same problem.
2013 Marks 40th Birthday
2012 Family Reunion
2011 Bon Voyage Marc