It must be part of Logitech's yearning to seem user friendly that they let you add your Nintendo Wii as a device (on my Harmony 650, at least).

It is completely pointless. The Wii does not accept IR commands.  But I guess the Logitech marketeers (or mouseketeers) get to claim yet another device supported.

But, it gets worse.  When I deleted the Wii as a device using the v7.7.0 software, I was warned that my "Play Wii" activity would take a hit.  Of course, I thought.  But, I still need that activity to get the other components to select correct inputs, etc.

After redoing the "Play Wii" activity I found that the v7.7.0 software did not want to edit any other activities.  I guess I p!$$ed it off.

If I did this again, I would start by deleting the affected activity.

I went back to using the MyHarmony on line software.  It is certainly slick, but I had to sacrifice having commands occur when entering an activity as well as some useful sequences, sigh.