Sorry, I didn't make myself clear. I rendered the movie OK but noticed a few inconsistancies that needed to be corrected. I needed sleep badly by then so saved the scene so I could continue editing later. When I opened the scene again, all that displayed was the first frame, all the others (60 in all) had disappeared!!! Does this mean that each frame (or keyframe) will have to be saved as a seperate file to enable further editing. Hoping this isn't the case and that there's an easy way to do it.