Interesting. When I added KPL via 'start linking', it correctly identified the device as a KPL, 6 button, V.36, but the button nodes were not added. As recommended, I removed the device from my lighting, then chose add new insteon device, entered the address, and selected the KPL from the drop-down list. I noticed there was only a KPL and KPL-8-button (no 6-button), so I chose KPL. Indeed, it added the load device and added 4 button nodes! Now when I click on the KPL in my lighting, is shows as KPL (does nto say 6-button), and V.00.
So, it worked, but feels like a bit of a bug in there somewhere. Both the ISY and the KPL are brand new from Smarthome. I have an Insteon/X10 mix and am finally tossing my X10 controller in favor of an Insteon controller. The ISY came with 2.7.0, so I updated it to 2.7.6 as noted in the forum.
Also, now when I click on the KPL from my lighting, and click on mutually exclusive buttons, it now shows first a list -- the KPL and 4 button nodes. This is followed by 2 lines -- mutually exclusive buttons 1 and mutually exclusive buttons 2. It used to have 1,2,3,4. I have tried clicking on these but see no defined change in action.
So, I have done the action in programming instead. I created 4 scenes with the desired result of pressing KPL A, B, C, and D (I want all to me mutually exclusive). I also created 4 scenes made up of the 3 buttons I want to turn off if the other goes on. Then, I created 4 programs -- for example, if button A goes on, set sceneA action on, and, set scene_button_B,C,D off. This way the LEDs turn off, leaving the one on for the scene I have assigned -- repeat for the others. A bit of an effort there but it works well.
Thanks so much for the pointer to get this all going!