Just for the record, since parts of this thread seemingly have been deleted for some reason.
I just ran into the same problem again, and luckily was able to find the culprit according to the title of this thread.
The problem was, I was going to assign an action to the Thump+Pinky(R Spread) gestures "put fingers down" and "lift fingers up", respectively.
However, the "put fingers down" and "lift fingers" gestures didn't work at all -- until I additionally added the "Rotate Hand Clockwise" gesture to the Thump+Pinky(R Spread) gesture set like shown below, however without actually assigning any action inside that "Rotate Hand Clockwise" gesture.

Anyway, after adding the empty "Rotate Hand Clockwise" gesture, the other two gestures "put fingers down" and "lift fingers" worked as intended.
Cheers David.P