[xwiki-users] Custom Authentication - Error: You are not allowed to view this document or perform this action

I've been searching the archive, but coming up short here. I'm trying to get custom authentication going on XWiki Enterprise 2.6. I've successfully implemented the XWikiAuthService by extending XwikiAuthServiceImpl as suggested here : http://bodez.wordpress.com/2008/10/15/xwiki-user-authentication-with-oracle… so/ I have also added the xwiki.authentication.authclass line to my xwiki.cfg. I'm able to automatically create a new user in xwiki using the XWiki.createEmptyUser method, and I get logged in. However, when I get in as that user all I get is "Error You are not allowed to view this document or perform this action." No matter what I try to look at, including the personal profile. Can anyone tell me what I'm missing here? The XWiki documentation says that you "can" implement your own right management service, but it doesn't say that is necessary. Is it? Thanks, Lenny