do you have any modifiers on the objects? That could account for the "missing objects." Also, go back to frame one, and see if the objects are still there. Are the objects still listed in the list(left side of the time line). If so, then I wouldn't worry. Especially if I did a save as, so I would have the original file. If you could post a screen capture of a view of the scene and the timeline before and after that could give some clues (as my natural state is cluelessness ;> ). I would just make sure that the triangle is "selected" and use only the trashcan icon on the time line to delete the keyframes (I was mistaken, hitting the delete key will delete the object. Sorry about that, I claim not-enough-coffee as my excuse). hth