fix from d3s7 this did work for me and no more error Usually that's a result of the angles being encoded differently and/or w/out the angle switch enabled in BatchCCE (or in BatchEncode) To date, those have to manually be set although I'm working with Trahald on a fix. My best guess is that flag wasn't set and they weren't encoded properly (Angle assets have to have the EXACT same GOP structure or Scenarist won't allow it) The other thing that it could be although rare is if the angles are different properties.. I have seen one movie that one angle was FILM and other was interlaced... Very rare and somewhat of a pain to fix...