That's a permissions thing (even when not applied it seems to be this way).
One way around this is to apply global Register rights to XWikiGuest - this will allow anyone not registered with XWiki to register themselves.
To do this:
1) Login as Admin
2) Click on the "Administration" link under the user name.
3) Click on "Global Rights"
4) Check existing rights to make sure "Register" is not restricted.  If there are no entries here, don't worry about this step.
5) Click on "Add Access Right Entry" on the right hand side.
6) Select "XWikiGuest" as the user in the "Users" entry list; and pick "Register" as the level.  Make sure "Allow-Deny" is set to "Allow".
7) Click on "Save & View".
 
To test, simply log out and click register.


From: Martin Denham [mailto:mjdenham@gmail.com]
Sent: 19 January 2007 10:49
To: xwiki-users@objectweb.org
Subject: [xwiki-users] b2: cannot register, links deleted by WYSIWYG, breadcrumb

I have upgraded to b2 from an old version and we have been using b2 for a week, but here are one or two issues:

If I am not logged in and click on the 'Register' link (/xwiki/bin/registerXWiki/Register) it brings up the 'Login' page.  So I cannot register without logging in.  I have changed 'Always authenticate on editing' to Yes, but this should not apply to registration.

When the default editor is WYSIWYG, editing a page removes links to images.

The bread crumb (Main:Welcome Edit Menu > My Company Wiki) does not display correctly on IE7 but does on Firefox.

Thanks

Martin