Hi! Thanks for your last helps. I have another problem.
In portfolio viewing (into my site his name is "All articles") I created a sub-category named Italy and another subcategory named New Zealand. The first sub-category shows correctly the images (and the links) of the items inside. The sub-category New Zealand doesn't show theme. What's the problem? Thank you very much.
P.S.: the template I'm using is JF Creativia