Hi Everyone

I am having a problem when trying apply effects on imovie, hope somebedoy could help.

I am using imovie HD 5.02 (111) (old i know).

The problem is when i try to add the specific effect of speeding up / slowing down the clip. The clip goes blank/black and in the timeline this 'blank clip' sits there like an empty clip.

There are no transitions on the clips either

This is the first time this has happened by the way, ive never had this before

any ideas?