Odd behavior when exporting as quicktime

I just exported a FLA file as a quicktime movie in CS4 using the ‘animation’ setting, and it produced quirky results. A ‘ghost’ of each object was left on screen, apparently at the point where a keyframe was present in the original FLA file. Don’t know how else to describe it, and I don’t think there is a way for me to upload the movie for anyone here to see?

Anyone experienced this? or know a way round it? I did manage to get it to play right when exported with the ‘DVC PAL’ type codecs, but the quality was awful. All the other options produced results at least as bad as the first attempt.