Your video looks great. I also have an FO Junior. You have probably already tried this, but I'll bring it up anyhow. Have you moved your media more to your left (as you are facing the printer)? I align mine to where I can see all of the alignment holes. And, when I put in media and it is too far to the left, I get the same error that you are getting. My biggest problem has always been E074 Error Y Over Current. Hope your problem gets resolved.