Try changing the 'Admins' role to 'Admin' in the database. Similarly, 'Users' to 'User'. This changed recently.
indeed, "Admins" does not designate a role but a group of person where as "Admin" really desginates a role. Good to see that you are following us sherman :-)
This really did the job! Thank you very much.
Can you give me some hints where to start when I want to write some portlets? The Documentation doesn't seem to help.