Thanks Brian,
My Firmware and UI are both listed as 5.0.16. I cleared the Java Cache after the update, and again. I launch the ISY finder from the desktop icon and launch the Admin console from there. I verified the 6 digit ID (tried two of them, both have version 4.0 firmware), tried different locations. Tried with linking and without. I select Link Management, New Insteon Device, Auto Discover, with and without the ID, still cannot get to work. Tried rebooting computer and repeating, still cannot get to link.
Do you have any other suggestions?
Thanks