Unity Car Tutorial Error

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Hello, I followed the Unity Car Tutorial and instead of the car I added my own model. It gave some errors when I ran it:

Error 1: NullReferenceException: Object reference not set to an instance of an object Car.CalculateState () (at Assets/Scripts/JavaScripts/Car.js:502) Car.FixedUpdate () (at Assets/Scripts/JavaScripts/Car.js:105)

Error 2: NullReferenceException: Object reference not set to an instance of an object Car.UpdateWheelGraphics (Vector3 relativeVelocity) (at Assets/Scripts/JavaScripts/Car.js:323) Car.Update () (at Assets/Scripts/JavaScripts/Car.js:95)

The actual car tutorial ran properly. I couldn’t figure out the problem. Any solution would be greatly appreciated.

Could you provide the code relevant to those errors?

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Sure, The script is the Car.js in the Unity Car Tutorial.

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It's at: http://unity3d.com/support/resources/tutorials/car-tutorial

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1 Answer

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instead of the car I added my own model

You ‘own’ model must follow the same object hierarchy of your have to modify the scripts to follow yours.