After upgrading Joomla from 1.5.10 to 1.5.22 and CB from 1.2 to 1.3.1 users are not able to login on the front end and the error E_NOLOGIN_ACCESS shows up after a login attempt.
I did see some earlier posts about this error but they all seemed to be related to migrating from Joomla 1.0 to 1.5 and that's not the case for me.