adding that my SanDisk cards (ultra) have no issues, but my Transcend card does...
whats crazy is that it also has errors just recording video on the Canon 60d, but it works fine in a Nikon d3100....with the same settings.
now with ML on the 60d, it has the same issues, but not the sandisk ones...so, my guess is it may be a combination of transcend and the card reader.
either way, im only buying the high(er) quality ones from now on....
....note....i will keep the transcends simply as a backup, as it does still work fine in picture mode(s).
hope that helps....
and yes, i noticed in youtube, u found the issue....im just adding info