I get no sharing images in the addthis markup, just the empty containers markup.
furthermore activating this plugin I get even a JS error:
TypeError: b.browser is undefined
the error report indicates the wp-includes/js/admin-bar.min.js?ver=3.5.1 file as error source, but it can't be as it goes away deactivating addthis plugin.
I hope to fix this, I love addthis sharing plugin!