I found I can start Nickel through Tools (but then it's more of a pain to return to KSM).
https://www.mobileread.com/forums/sh...&postcount=953
I can live with that, but now I found my Calibre Wireless isn't working. On the Kobo it says connected, but Calibre doesn't show it as a device or show the message that it's connected. I updated Calibre but no dice. I guess I might update KOReader, but I'm afraid of something else breaking like the light gestures.