I encounter a weird problem when I open Unity the second time outside of the class that assets are not importing to the application. But it processes out after several times.  The app makes my computer process extremely slow.  I put a kitten in the scene and place the playmaker as well. But I think i didn't do it right. The kitten jumps up when I walk into the collider, but it doesn't come back to the ground.

Also when I do the screencast, the weird sound occurs again.

Youtube Link: https://youtu.be/_5qWMiMAIpQ