In order to get this working again, you must delete the user from the user_ table then recreate the user in the user_ table. Then you can login in with the user, but it doesn't appear in the user management screen in libresource, nor does libresource recognize that the uri /users/[deleted user name] is valid.
Where else does this need to be deleted, other than just the user_ table?
this is more of the stack trace.
org.libresource.kernel.URINotExistException: ls://localhost:9000/users/test1 :: node = null pathpart = test1
org.libresource.kernel.ejb.KernelServiceBean.lookup(KernelServiceBean.java:554)