Source disc is not a dvd movie

The other day I was burning some dvds and on the last one I get an error that say “Source disc is not a dvd movie”. Any suggestions on what might be causing this or ways to fix it?

What was the original?

The original what?

The original dvd you were trying to backup that gave you the “Source disc is not a dvd movie”?

No it was a copy.

There’s better ways to make copies of copies than 1Click, since transcoding to hard drive is not necessary with a copy on a DVD5. I’d use Nero or even CloneCD for that purpose.