We'll create fresh WordPress site with Category and Taxonomy Image installed. You have 20 minutes to test the plugin after that site we'll be deleted.
if (function_exists('get_wp_term_image'))
{
$meta_image = get_wp_term_image($term_id);
//It will give category/term image url
}
echo $meta_image; // category/term image url
where $term_id is ‘category/term id’