Unable to connect to Serviio - Java / router problem?

I had Serviio installed on my Vista PC connected to my Sony KDL37EX503 via a Powerline adaptor and all was well (although I had noticed that I get several instances of Serviio displayed although only one had the icon and could access the Serviio server, but that's another less serious problem).
I noticed in the last few days that the Servii icon has disappeared and I can no longer access the server. I have KooRaRoo media server also installed and that still works, as do the other internet resources.
Two things I can think of that have changed since I last saw Serviio on the TV:
- I updated Java from version 6 release thirty something, to the latest version 7 release 10.
- I updated the firmware in my Netgear router
I also updated Serviio to the latest version but this made no difference.
Any help gratefully received!
I noticed in the last few days that the Servii icon has disappeared and I can no longer access the server. I have KooRaRoo media server also installed and that still works, as do the other internet resources.
Two things I can think of that have changed since I last saw Serviio on the TV:
- I updated Java from version 6 release thirty something, to the latest version 7 release 10.
- I updated the firmware in my Netgear router
I also updated Serviio to the latest version but this made no difference.
Any help gratefully received!