I have a good guess at the correct signals. If I'm right, the signal for "OK" is
0000 0073 0000 0012 000F 000A 0006 000A 0006 0016 0006 000A 0006 001D 0006 0010 0006 000A 0006 000A 0006 000A 0006 000A 0006 0016 0006 0010 0006 0016 0006 0010 0006 0010 0006 001D 0006 000A 0006 0C5B

All four of the bad signals you posted are missing the same single burst, so I can't be sure which position that burst goes in or what its value is (so the above is just a good guess). Once I see one good signal, I'll know the position and value of that missing burst.

Did you learn those with the Pronto connected to the PC? If so, you should be learning with the Pronto disconnected from the PC.

A burst can't be dropped this way in the course of getting the IR signal from the original remote to the Pronto. It must be dropped in getting the captured data from the Pronto to the PC. That seems to happen only when learning while connected. I believe it is caused by a latency problem in some other Windows device driver (probably network).

If you learn with the remote stand alone and then load to the PC afterward, you shouldn't get this problem.