What data did you enter into the user (except for personal data)?
I have assigned the password manually and set an existing workspace as default personal folder.
This morning i have created the same user account once again, this turn with a random pw and a personal folder.
It worked like a charm.
However, while trying to create a dummy user withy the previous parameters (manual pw and existing workspace as personal folder), i've got the error displayed in the attached screenie.
I *think* the faulty parameter is the pw.