Help me please.......on Mac

Hi,

I was using serviio, installed on my Imac, until yesterday. But today it doesn’t work anymore. (I bought yesterday the new iMac, and I have installed the backup I made yesterday morning with the running serviio)
My tv can’t find it anymore and, even when I open the Serviio Console on my mac computer, it says to me “cannot connect to the server. it doesn’t seem to be running…”
I’ve already uninstalled the application and downloaded it again but this problem is still the same. I've downloaded the new version of Java but nothing.... The Imac software is the same of two days ago..!!!!

If I must take the pro let me know.

Please help me!!!!

Thanks

Harry