Ralf on "zpbase horizontal list"

Hi
just upgraded to 1.46 and now I have a problem with formatting a horizontal list.
http://www.ralf-kerkhoff.de/pages/neue-bilder

This is how it works before the update:
Codeblock 1 on the page is:
<?php printLatestImages(20,'',false,false,false,40,'',120,120,true,false,false); ?>

CSS (added this to style and choosen.css):
#latest {
list-style: none;
float: left;
margin:0px 0;
}

#latest ul {
padding:0;
margin:0;
list-style:none;
}

#latest ul li {
list-style:none;
float: left;
padding: 0px 4px 0px;
margin:0px 0;
}

this has worked before the update but now I get the images in a vertical list.

Any ideas are welcome

Cheers
Ralf