WP-Stats has joined in the updates along with WP-Polls and WP-UserOnline. Now you do not need to integrate wp-stats anymore, the same goes with wp-polls and wp-useronline. Just create a page and type in
[ page_stats ] (without any spaces) in the post’s content area, and there you go.
The down side of it is that it requires the latest version of wp-email, wp-polls, wp-views and wp-postratings.