Power user quota.
Using Jamroom
Note also, I just created a new power user account. When I try to update the quota i get an error:
Invalid Quota ID - please select from the list of allowed Quotas IDs
However now, there isn't even a way to select. I assume this is because power users can only create one type of profile in my system. But nonetheless, I'm still getting the problem that the profile is not associated with the power user quota; so i can't create any new artist profiles.