When Kerberos and properties authentication are used together in realm for http-interface and no user is contained for properties authentication then Kerberos authentication is not taken into account. It means that error page with following text is displayed:
"...The Enterprise Application Platform 6 is running.
However you have not yet added any users to be able to access the admin console..."

When some user is added to used properties files then Kerberos authentication works as usual.

How to reproduce:
1) Add kerberos authentication into ManagementRealm and start Kerberos server
2) Start AS
3) As a user with valid Kerberos Ticket access Management Console -> error page is displayed instead of granting access
4) Stop AS
5) Add user to ManagementRealm via add-user.sh
6) Start AS
7) As a user with valid Kerberos Ticket access Management Console -> Management Console is displayed