I'm running a DHCP server with DNS at another site. Everything was working until I tried to switch it to DDNS. It broke. Server object disappeared. So reinstalled DCHP server using the latest Java console. Old records all there and its working to the point that is issues IP addresses etc but it does not update the data/table/lease for new IP addresses. The old ones are OK but if they expire and new ones issued I just get the hour glass pointer and red annotated bar in bottom left corner. Also when I try to export the table, it gets half way and then stops. I've run the dnipinst.nlm but it does not report anything - just that it's installed and no need to recreate.

Any clues appreciated