I got your module from "JOOMLA! TEMPLATE 002085".

There is an error in modules/mod_as_superfish_menu/tmpl/default_separator.php on line 25 which breaks html validity. I corrected it to:

?><span class="separator_<?php echo html_entity_decode($item->title); ?>"><?php echo html_entity_decode($linktype); ?></span>

instead of

?><span class="separator"<?php echo html_entity_decode($item->title); ?>><?php echo html_entity_decode($linktype); ?></span>

please consider doing something similar. :)