I keep getting "unable to complete your request" when trying to add another widget.
We're sorry, but we were unable to complete your request.
Well, nobody can say that Roberto's Retreat 2 - Beta isn't pushing the limit. I advised him to think of his viewers, and limit the complexity.
But as we explore the amenities of Beta Blogs, I'll be surprised if we don't run into limits like this occasionally.
(Edit 9/9 21:00): I see that there is actually a Known Issues entry for this problem, from 9/8. Maybe the BKI blog will actually be useful.
(Edit 9/13): In Known Beta Issues, this problem is reported as fixed.