When the new user logs in he is authenticated successfully. However, when he tries to enter his course he can't enter - he hasn't been enrolled. I am sure I have set up all the correct parameters.
If the user then logs out and logs in again, he gets a "Weird error: User not found" error message, after which however he is still logged in at the front page of the site. But he still cannot enter any courses. If internal enrolment is enabled as an alternative method and the user logs in using the enrolment key, he can enter the course, however, upon subsequent logins he is no longer enrolled in the course, and the same error is shown!
I have added this to the bugtracker at:
Anyone else experienced this, or any comments about it?