It looks like you areusing the old version of the DSEFU mod, but you don't have this part of the code altered:
<font class=CategoriesList><a href="home.php?cat={$categories[cat_num].categoryid}" class=VertMenuItems title="{$categories[cat_num].description}">
************************************************** ********ABOVE IS THE FIRST ENTRY
{$categories[cat_num].category_name|escape }</a></font><br>
So that is probably rendering a non-dsefu link.