[Plugin: Wordbooker] Caching problem when sharing a post

I’ve installed wordbooker for the first time and had no problems connecting to my Facebook account and fan page. I am able to click “like” and “send” without issue.

However when I click on “share”, it works the first time. But after that, click share just pops up a large facebook like box in the upper middle of the blog post and just sits there with a spinning wheel inside it.

After a number of troubleshooting tactics, I can confirm that clearing the browser cache and then logging back into Facebook will resolve it, but after sharing once it goes back to the blank box on the next attempt at sharing. I tested this on Chrome and Safari (on a Mac) and both behave the same. Works fine the first time and then hangs. Clearing the cache and then logging back into Facebook will get it working again, but after one share it’s broken again.

Is there a setting I can tweak or is this a bug?

http://wordpress.org/extend/plugins/wordbooker/