After a month of 'missing right sensor' and 'low battery' warnings (the pedals are only a month old) I replaced all the batteries, straightened the tape that had gone awry, applied some oil and otherwise tried to ensure my Vector 3's were in tip-top shape.
I went on a ride today and voila, everything was working. It was a wonderful thing. PCO, power phase, standing/seated time ... and of course accurate power! No beeps or other weirdness.
Just when I thought I might be out of the woods, Cycling Dynamics (and everything that goes with it) disappeared! Like gone. See attached fit file. Anyone got any thoughts on what is going on now?! What a mess. :(