[xwiki-users] Workspaces and ldap issue

I'm currently working on a pilot install of Xwiki workspaces at our University and have installed Xwiki on a RHEL 5 server with tomcat5 and that seems all good and well. I've been working lately on getting ldap authentication setup and working and I can now successfully log into Workspaces using ldap credentials. However, once logged in using ldap I get the following message. " You cannot create a personal space since you are not registered on this wiki !" So I'm hoping that what I'm trying to do is possible because if not its pretty much a show stopper for our attempt with Xwiki. I'm using Xwiki Workspaces 1.1.1.