I have a scene in which I have and animated iPad that rotate 90 and then back to its initial state. The animation time length is 5 sec. It runs ok in the browser preview. It runs ok in an iBooks Author document. I does not run in a fixed layout epub I am creating/ To solve this problem temporarily, I decided to export the animation into a video. The exported mp4 shows a file with 0 sec time duration.
Any ideas why is this happening?