[Plugin: Simply Poll] Warning: Division by zero in […]

I am getting this Warning now that I have reset my poll results.
Here is a screenshot of the Warning message,
I will not display the link in this post due to Search Engine issues.

Warning: Screenshot

I have checked my results.php folder,
and this is the exact code inside of that specific file:

<dl class="sp-results">
	<?php foreach($answers as $key => $answer) : ?>

		<?php $percentage = round((int)$answer['vote'] / (int)$totalvotes * 100); ?>

		<dt class="sp-answer"><?php echo $answer['answer']; ?></dt>
		<dd class="sp-answer-response" style="width:<?php echo $percentage; ?>%"><?php echo $percentage; ?>%</dd>

	<?php endforeach; ?>
</dl>

<p class="sp-total"><?php _e('Total votes'); ?>: <?php echo $totalvotes; ?></p>

Please HELP!

http://ww.wp.xz.cn/extend/plugins/simply-poll/