Can't see audio wavelengths in iMovie Timeline
I am currently using iMovie 10.0.06. I accidentally clicked the " x" on the timeline and it appears to have messed up my timeline audio. I am attempting to fade in/out some music however, the audio line is very thin and does not allow any room for audio slides. I have tried everything but nothing seems to be working to reveal the wavelengths . See pic below . Please help thanks
MacBook Pro with Retina display