What are the steps to reproduce your issue?

As a potential new user of the forum, visit the forum page and try to register an account:

What is the current behavior that you observe?

You are given an option to login or register. If you try to register, you are only able to attempt to login, but cannot. The following error message appears:

Wrong login/password                 

What would be your expected behavior in this case?

A dialogue should appear where you enter your credentials and a confirmatory registration email is sent. The potenial user becomes an actual user with a username and can start discussions in the forum.