categories not showed - italian language - don't add photos on existing albums

Hello I just installed simgallery and I have the problem that when loading photos and albums, or I select the category where to add it ( I have enabled in the configuration panel) a popup appears with a white square . but they do not appear categories . this is the site http://fotocommy.com[...]ex.php/gallerie

Other, on an existing album don't add photo when i click on add photo in the album

I also wanted to know whether longer exists the Italian translation .
thank you
arthur