when I include printLatestImages(12); funtion
it has wrong path to the zenphoto and the thumbs doesn't show on my external page even that I defined zenphoto at the begining of the page.

So where did you exclude that function? It is meant to be used on Zenphoto theme page and not external. If you want to do that oyu need to follow the "zenphoto as plugin" way described on our user guide.

on the older version of the zenphoto I simply had the functions included on the external page of the zenphoto

http://www.zenphoto.org/news/zenphoto-as-a-plug-in-using-zenphoto-functions-from-outside-zenphoto