This patch broke the ability to add users from the admin screen. I have no idea why, but if I back this change out, the admin/user/user/create screen works again.
http://cvs.drupal.org/viewvc.py/drupal/contributions/modules/nodeprofile...
The error is that in the user_validate, it triggers the error "The username %username does not exist.".
I'm sure that the #data_separation needs to be there in some cases. So I'm marking this as CNR. I don't know when and why.