[Plugin: WordPress.com Stats] wordpress.com stat not counting

for wordpress stats to work, you need to make sure that:

What if the stats don't start showing up? Do I need anything special in my theme?
Yes, your theme must have a call to <?php wp_footer(); ?> at the very bottom right before the </body> tag.

This means that you need to have that code in your footer.php in your current installed wordpress theme.

from the faq’s