Multiserver Setup ISPconfig 3 third DNS server?

[primesoftnz]

I have been following the instructions and got to setting up the slave DNS servers http://www.howtoforge.com/multiserve...ispconfig-3-p5

I was wanting to have a third DNS server. i.e. ns3.mydomain.xx.xx and having created the user and given privileges on the master server proceeded to build a sixth server.

When I got to setup ISPconfig3 on that server I got the following result

Shall this server join an existing ISPConfig multiserver setup (y,n) [n]: y

MySQL master server hostname []: web.mydomain.xx.xx

MySQL master server root username [root]:

MySQL master server root password []: ********

MySQL master server database name [dbispconfig]:

ERROR: Stopped: Database already contains some tables.

Is this not possible, or what have I done wrong?