The same thing is happening to one of the pages of my site. I use a WP plugin for the entire site, except for one page, where I needed to write a raw HTML.
For that page, I’m trying to use the custom button, but no count is shown: http://astronomia.blog.br/?page_id=2255
I tried to “reinstall” the button, but got nothing… The FB button is Ok, and the twitter buttons on the other pages are also Ok. Thanks for any help!