I also have kind of a problem with Registrations. It's puzzling.
It sometimes happens that after editing and saving a Registration, the buttons (+ Regist Bank -) don't work anymore. I can't go back or forward in my registrations.
Switching off and on again is the only remedy.
This happened om my Genos1 and now on Genos2 as well.
I made several attempts to bring up the error on purpose so I could make a video of it - so far nothing.
Now I suspect that a corrupted registration may be the cause the problem.
It’s true that the +/- buttons don’t function after you save a registration. This is a long time bug that looks like it will never be fixed. The simple solution is to manually load a registration. Then the buttons function properly.
But the +/- button has nothing to do with a registration malfunctioning. My registrations function properly. But whenever someone sends me a registration they say isn’t working, I take a look at it with Murray’s Registration Manager. It will tell you a lot, including what groups were memorized in each button.
Cheers,
Fred