I just installed admin profiles on 3 of my websites (all zen 1.3.8a). It worked perfectly on two of them but on one site I am not able to add new admin profiles. Once I click "Insert", add details (admins name, email, password) then when I click on "Save" it takes me to the main admin page (admin/index.php) and the admin profile is not inserted. How do I recify this?

Also I noticed that though the orange "Permissions" button now appears at the side of my existing admin profile, the changes I make in the permissions are not saved.

Could anyone please help me out?

Thanks for your help.
Harshil Zaveri