If you're using VL, be sure you have the latest version of Unetbootin from the repos.
mkdosfs -v /dev/sdb1Naturally, you'll plug in the actual partition for "sdb1" if that's not it.
Mount the partition, and then try Unetbootin. If you need to retry after that, ERASE or reformat the partition beforehand to save a lot of Unetbootin run-time.
No idea whether this repeats what was in the video. Can't view it right now due to bandwidth.
BTW, RC2.2.6 is out and initially looks good.