view bug after update to 1.5.5

Hi,

I can see that it comes from the fact that there is some HTML which is not valid.

It seems that there is a problem with some code that we changed for a new feature.

Could you edit the file "quantity" of the view "product" via the menu Display->Views and change the code:
echo $this->cart->displayButton(JText::_('ADD_ME_WAITLIST'),'add_waitlist',$params,hikashop_completeLink('product&task=waitlist&cid='.$this->row->product_id),'window.location=\''.hikashop_completeLink('product&task=waitlist&cid='.$this->row->product_id).'\';return false;');
} ?>
</div><?php

to:
echo $this->cart->displayButton(JText::_('ADD_ME_WAITLIST'),'add_waitlist',$params,hikashop_completeLink('product&task=waitlist&cid='.$this->row->product_id),'window.location=\''.hikashop_completeLink('product&task=waitlist&cid='.$this->row->product_id).'\';return false;');
} ?>
<?php

and try again ?