IMovie '14: Instant replay, doesn't work

Question

In iMovie '14, when I have selected a clip, I can select " modify" and "instant replay", but the selection of "100%" "50%" etc stays in grey.
So I cannot select this modification to the clip.
Also changing of speed isn't possible.
See the picture below and see the grey numbers.
What do I wrong? I follow exact the iMovie '14 tutorial (App Store) to select, cut a.s.o.
Hopefully someone can help me.
Thanks.

Answer 1

I clicked on each item and here are the codes. The first three work fine, the Sprite object is the Replay.
trace objects under cursor:
[object bigStar] instance7[ 54.6, 0, 46.35, 47.2 ]
           -> [object ballsSnow] instance6[ 510, 450, 178.9, 93.85 ]
                     -> [object MainTimeline] root1[ 0, 0, 800, 601.35 ]
                               -> [object Stage] null[ 0, 0, 800, 601.35 ]
trace objects under cursor:
[object bigStar] instance23[ 620, 450, 46.35, 47.2 ]
           -> [object MainTimeline] root1[ 0, 0, 800, 601.35 ]
                     -> [object Stage] null[ 0, 0, 800, 601.35 ]
trace objects under cursor:
[object bow] instance73[ 630, 530, 57.95, 48.15 ]
           -> [object MainTimeline] root1[ 0, 0, 800, 601.35 ]
                     -> [object Stage] null[ 0, 0, 800, 601.35 ]
trace objects under cursor:
[object Sprite] instance76[ 0, 0, 50, 23 ]
           -> [object MainTimeline] root1[ 0, 0, 800, 601.35 ]
                     -> [object Stage] null[ 0, 0, 800, 601.35 ]