Interpolation Issues

Whenever I have to adjust my timing, I delete all the Breakdown frames and adjust the Keyframes. Then when I try to Interpolate again, I get this error message.

Saving and quitting Blender seems to solve it sometimes, but kind of inconvenient. Even then, the problem comes right back after I delete the Breakdown frames.

I’ve tried manually setting all those frames into Keyframe, but I still got the same results.

Where are the Breakdown frames? And how do I work around this?

I need to stop being stupid. Turns out I didn’t select the correct layer and Blender assumed I wanted to Interpolate the entire animation by selecting Summary. I just needed to Interpolate one layer.