I'm getting the exact same problem as Tshcomm. I had my tech guys inspect my PHP settings on server and nothing wrong with it.
They said the problem is that sharebar isn't working right with WordPress 3.5 and needs to be updated.
So....Sharebar people.....when can we expect an update? Last one was in Jan 2013.
I'd really like to try this out because I've seen it on sites and it looks good.