So I upgraded to 2.8.8 over the weekend from 2.7.15 on my ISY99IR Pro.
Everything has been fine until today. I noticed that I did not get my 6:00 PM email from the ISY as I do every day. This did not bother me much and I didn't think much of it. Tonight we went out to go to out friends house for about an hour. When we leave at night, we use a button on a KPL to trigger a scene and when the button triggers the scene we use a program to watch for the same kpl button to be "not off", it waits 2 minutes and them turns off the same scene. This has been working reliably until tonight also. When we got home I noticed the outside lights were still on. I tried to access the ISY when I got in and it would not allow local access from within my LAN. I looked at the unit and the power LED was on and no others were on or flashing. I cycled power to the ISY and now I can access it. I also got the power up email that I have it set to send when there is a power cycle.
The ISY's power source comes from the wall wart that came with the ISY26 and it is plugged into an APC UPS. I don't know of any power issues as of yet.
What do you think? A Fluke, underlying problem, etc...?