When I create the user, after input of the user name and transition to a following field the error message is deduced.
I put a screenshot with an error and the information on an error in console FireBug.
I just added this patch, it fixed the problem. Brogan, you need to create a new user manually in the Admin CP to see it happen. For me, as soon as I entered a "username" in the first top box and then went to go to the next box down the error pops up right away.