if you don't type in a name for the new configuration but do everything else, I bet many newbies will be clicking accept many times before realizing something is wrong.
Since the name is way at the top and the accept button is way at the bottom, they may miss it.
It should be easy to have some sort of alert pop up.
I clicked the button about ten times myself before I realized what the problem was. The old UI had this reminder and I think it's a good addition.