Problems with Typepad WidgetBox Integration

I just tried experimenting with WidgetBox on my blog this afternoon. I integrated the AddThisBookmark widget into the left hand side navigation of PR Communications. All appeared to go well. Except later this afternoon when I clicked on a permanent link for one of my articles, Internet Explorer through up an error. Karin, checked her computer, and it threw up the same error. I wondered if other people had experienced some of the same issues with WidgetBox?

Also, what does the crew at Typepad think about the service? Have any Typepad users reported any problems with the WidgetBox integration?

Or was this all just my version of IE? :-)