Okay, I created a new user on my machine and only installed the social media plugin. Same stuff happened with it not accepting the okay button, well, at least not closing the window. I do see it dropping icons in the background but without the Social Media Toolkit badge. If I click the okay button a second time it then puts it there but as a second grouping. So I hit cancel and delete the first group it inserted.
In the div tag Masthead I have any text etc set to right justify. Should I wrap the social media toolkit in a paragraph tag or something weird like that?