Getting null reference exception

Hi,
I made a game which is divided into two scenes. The first scene consists of menu the second scene consists of the gameplay.
The gameplay scene consists of a compass script attached to a active gameobject with public reference to other objects of the same scene, like player transform, some other transforms. I populate these references manually in the inspectors.
The game works perfectly in editor, but when I play it in standalone windows build I get null reference exception. On going through the log I found out that the compass script is throwing the error which is due to it not being able to find the objects mentioned earlier.
I am not able to figure out why is this happening.

Please let me know what might be going wrong.

 

What do you mean with "manually"? In code or in the inspector?
What do you mean with "texture transform"? A transform of a GUITexture?

 

By manually I mean in inspector texture transform means the transform of the particular sprite, since I am using NGUI.
Sorry for not being clear.

 

You will sometimes find that objects in the editor will initialize in a different order to when they are played on device or as a standalone.

My guess is that in one of your Awake or Start functions of a game object or component you are trying to use something on another game object or component that is yet to have started and therefore been initialize. This is where the Awake and Start play there part so you can setup components and properties in Awake and then other game objects can access them in Start.

Try doing some script debugging and the null should become obvious