Want it button error when products on sale

[doooomed]

I couldn't find a support thread on this...

I have installed the "Want it" button (http://www.zen-cart.com/downloads.php?do=file&id=1810) and it works fine unless the product is on sale. If the product is on sale I get a bunch of code instead of the button. Here is a couple screen shots of regular product and product on sale.

Url is dxxxxmed.com (replace x's with o's) but I have removed the code so it wouldn't show.

Thanks!