zf3d I checked the file you attached, and as far as I can tell from importing it into the editor, the animation has Position set to Fixed, and the value only changes from 0 to 1 between frames 0 and 64.The change is too small to verify properly. I suspect that this value was altered at some point during some process. Could you identify where this change occurred? I guess the correct setting should be Position set to Percent rather than Fixed.