Mythtv-database configuration problem

Hi,

After rather foolishly deciding to upgrade my two mythbuntu boxes to 12.04 (then to 13.10 as I had no end of issue's) I still have an issue with my slave machine.

When running "sudo dpkg-reconfigure mythtv-database" I get the folling error.

ERROR 1062 (23000) at line 1148: Duplicate entry 'TV Frontend-CYCLEAUDIOCHAN-mythbuntu' for key 'PRIMARY'

I can run the backend setup and install cards, tune them and see them on the frontend but they are unavailable due to error's. Also the slave drives do not show as available on the frontend (frontend is running on the master backend machine).

Any help appreciated.

Thanks