Object reference not set to an instance of an object error

Questions & Answers
1

Trying to access array within another script, have tried the below but getting the error. Seems what im trying to do is pretty basic but just cant work it out :frowning:

Class One (Startup)

public float[] theArray;
theArray = .....

Class Two

float[] theArray;

Startup startup = startup.GetComponent<Startup>();
theArray = startup.theArray;

Error

Object reference not set to an instance of an object

2

This is your problem

 Startup startup = startup.GetComponent<Startup>();

You are trying to use the null startup variable to get a copy of a Startup component.

You need to work out what the Startup component is attached to - if it is the same game object then:

  Startup startup = GetComponent<Startup>();

If it’s on another game object then you need to get a reference to that game object and:

  Startup startup = theOtherGameObjectOrComponent.GetComponent<Startup>();

Check out the GetComponent tutorials on Unity Gems or the basic instructions here