Indigo Domotics

If you think about what Device Extensions does, it looks for changes in other devices that then update your D/E device so it is reading all the device changes across Indigo and then pulling in things that are interesting and ignoring the rest. That, technically, would be ignored if it's not tied to a D/E device however the message is a thread debug, meaning it is there for when things are being debugged, but throws an error anyway. That particular function is new and I'm trying to think of a way to not throw the error without dumping the thread debug.

How often do you get the message?

I just put a patch up there that will take care of that message for you, you can get it via the Device Extensions Git Download.