Please create and FMR here:
http://www.mylansite.org/Bugs/.
The User thing:
I see you are using CommunityBuilder. So you will have to ensure that the user exists within CommunityBuilder as well. Remember: It is not just the #__users table storing the users. There are all these "acl" and "aro" tables as well - and obviously the CB stuff for you. CB should have an option in the backend to synchronize the users, this should make the user show up in your CB userlist.