Just getting started with Tomo's program, but I ran into an unexpected snag: in the middle of practicing I found that I suddenly couldn't press down on the fretboard with my ring finger. Felt like I slammed my fingertip in a car door if I applied any pressure. I have calluses and I'm not using heavy gauge strings and, oddly, nothing preceded it. Feels like a nerve issue actually. 24 hours later, I have to type this with my right hand! Strangest thing that's happened in years of guitar playing.
Anyway, just wondering anyone's dealt with that before.