SWF artifacts

Hi ,

tiny bits of movieclips are remaining in my flash movie even after they are not in the timeline!

I have some movieclips in my Flash moviethat fade away using a motion tween (alpha 100% to Alpha 0%) and once they are gone i inserted a blank keyframe in the timeline, so they should not appear in the rest of the movie.

Its usually a couple of pixels from the base of the movielip’s image that remain, and I’m racking my brains trying to find the reason why this is happening.

I;m using Flash 8 (mac) and the same happens when i use 2004.

Anyone got any ideas?

Thanks,

Ross