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This question was closed May 17, 2013 at 12:22 AM by randomuser for the following reason:

The question is answered, right answer was accepted

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Question by randomuser · Dec 03, 2012 at 04:24 AM · c#errorruntimecomponent

Why is GetComponent() causing a null exception

Hello! This line in my code

 GetComponent<EditorGUI>().bMouseOverGUI = false;

and every other GetComponent() call I do causisi this runtime error : NullReferenceException: Object reference not set to an instance of an object.

Does anyone know why this happens? Thanks.

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Answer by randomuser · Apr 03, 2013 at 11:38 PM

The problem was that I was calling the script during Start(). Thanks!

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Answer by Eric5h5 · Dec 03, 2012 at 04:25 AM

Do you actually have a script called EditorGUI? If so, you shouldn't call it that, since it's the name of one of Unity's classes.

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avatar image Kryptos · Dec 03, 2012 at 01:15 PM 0
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And it won't work at runtime since this particular class is inside the UnityEditor assembly.

avatar image randomuser · Dec 03, 2012 at 02:57 PM 0
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Yes, I do have a class called EditorGUI, but the problem persists with another class as well which I tried.

avatar image randomuser · Dec 03, 2012 at 02:58 PM 0
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unless LevalManager is also a unity system class

avatar image Kryptos · Dec 03, 2012 at 04:03 PM 0
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Did you make sure that your object does have this component? It could be on another object or on a child object.

avatar image MibZ · Dec 03, 2012 at 04:14 PM 0
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Are you sure that bMouseOverGUI is a public bool?

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