hello
still my problem:
Having investigated, I discovered this line in the index.php file of default theme
<? php if (defined ( 'WEBPATH')) die (); [...]; $ firstPageImages = normalizeColumns ('2 ', '6');?>
so I understood why I had 18 pictures when i put 16 images per pages in the admin tabs.
so, I changed to "$ firstPageImages = normalizeColumns ('2 ', '4');?>".
if I put 12 pictures per page in the admin tabs, it works well, if I put 20, it works too, but if I put 16, I return with my 18 pictures.
Is the function normalizeColumns works well?