In "Step 2" of the registration wizard the instructions say that if one is already registered, one should just enter name and password, but it will not accept "name and password" it requires all four fields to be filled out. This is confusing.
Hmm, indeed. This is long standing ui bug. Hope to get it fixed, but glade issues seem to be causing problems.
In fact the UI does not mention that the e-mail address is required, for either a new user or an existing user: "Yes: Enter your current user name and password below." "No: Choose a new user name and password and enter it below." I am confused by this dialog every time I'm confronted by it, until I realise that the e-mail address is in fact required. Another confusing aspect of this UI is that if you enter an incorrect password, you're prompted with a dialog which says "This username is already taken.".
this should be improved somewhat in version 3.1.5 or higher....
Fix confirmed with up2date-3.1.15-7.