Vuldacon > I don't have much time right now, so short and slightly disorganized post, but my problem isn't (yet) fixing the duplicated frame - I have enough experience with GIMP to be quite confident about that part - but seeing it. Cf. post 21, nowhere I can find (generate) a storyboard with a different number of frames than what was rendered in the first place. You do you get it ? This problem seems to hit the run animation harder - but it's mainly a missing frame problem, not a duplicated one. I guess the duplicated frame replaces another one - so there is no additional frame in total - explaining why I can't seem to find a faulty storyboard by just counting the frame number. I'll check it out next time I'll got a chance to. It would make sense. If the duplicate frame indeed replace another one, I'll also need to render the first frame twice (or the last one if the duplicate just push the last out of the stb) so nothing is lost before I fix the duplicate.