My game is giving me error messages! Please Read!

I am going through the space shooter crash course,and I want to test my first scene. And when i do,An error message pops up(actually,three!) saying that "A 'Behavior' contains feilds that are uncompleted or filled with bad data." Can someone help? I dont now what to do! please respond ASAP. Thank You!

If you simply read the message you understand that a behavior (you know what are them right?) has filled with wrong datas or without data at all.
Try to go back on the tutorial and check if you set everything right, you must have forgot something ;P