I solved it.
It was a plugin that blocked it a advanced image slider.
I deleted it and it worked again.
Oke its solved thanks to esmi.
thanks all for comment.
<?php get_header(); ?>
<div class="clear"></div>
<? if ( is_category() ){ ?>
<div class="subheader">
<h1><?php echo category_description($category); ?></h1>
</div>
<? } ?>
<div class="breadcrumbs">
This is it
