[download playlist] YouTube said: This video does not exist.

[mickro]

$ youtube-dl "https://www.youtube.com/watch?v=xoUY_0-w9hQ&list=RDEMo6uWvZD8npfRFfuY7IarAQ"
[youtube:playlist] Downloading playlist RDEMo6uWvZD8npfRFfuY7IarAQ - add --no-playlist to just download video xoUY_0-w9hQ
[youtube:playlist] RDEMo6uWvZD8npfRFfuY7IarAQ: Downloading Youtube mix
[download] Downloading playlist: Mix - William Onyeabor
[youtube:playlist] playlist Mix - William Onyeabor: Collected 26 video ids (downloading 26 of them)
[download] Downloading video 1 of 26
[youtube] RFfuY7IarAQ: Downloading webpage
[youtube] RFfuY7IarAQ: Downloading video info webpage
ERROR: RFfuY7IarAQ: YouTube said: This video does not exist.

$ youtube-dl -U
youtube-dl is up-to-date (2015.06.15)

youtube-dl took the end of the playlist ID to get the first video. Which obliviously does not exist.

[dstftw]

The first video in this mix does not exist as stated in the error and this is expected behavior. You can use -i to ignore errors.