if it fails, it will save the playlist to the working directory, then you'll be able to download it again,
If it's okay I have a suggestion. Any way you could add like a note when the download completes? Like if I have kept it overnight, it might download only half and the prompt would close. The file may or may not have downloaded all the way but I wouldn't know till I checked and tallied the timing of the video I have with the one on recu. So any way you could add a download complete prompt?
It ended up completing just one, file is perfect.