I should have mentioned that I also tried forwarding port 80 with no luck. It appears that it is not a port forwarding issue, since when I put the ISY in the DMZ, I still received the error message, "unable to connect". In the address of the ISY, I am using the port number that I was prior to upgrading. Is this port number still correct? How do I verify it, since the help screen only gives me the IP address and no port number?