[Plugin: WordPress Popular Posts] Thumbnail Not Showing

First of all … this is a great widget!! Lots of flexibility in both styling and functionality.

That said … I set to show 5 posts in the widget and they’re all showing just fine, except for one. One post is showing the default “No Thumbnail” icon but the post does have a Featured Image. So, why is it showing “No Thumbnail” and how can this be fixed?

Thank you!
Ben

http://ww.wp.xz.cn/extend/plugins/wordpress-popular-posts/