ActiveVirtualCamera is null - not sure why?

I have one virtual camera in my scene and i have a reference to the cinemachine brain but when i do:

Code (CSharp):

1. Debug.Log(_cinemachineBrain.ActiveVirtualCamera);

It is null, shouldn't this be my one and only virtual camera in the scene and not null ? Confused why this is the case. The virtual camera is working too, it follows my game objects but i can't see to get a reference to the relevant virtual camera.

 

Had similar issue, when there were two Cinemachine Brains present in the scene. One of them was not properly initialized. So, check if there are duplicate brains somewhere in your game.

 

After upgrading my project from Unity 2018.1 to 2018.3, and also upgrading Cinemachine from the asset store version to the latest version on package manager (2.2.8), my script also begun to return null for the ActiveVirtualCamera field.
Was working fine before the upgrades, and the camera still follows my character as intended.

Any insights on how to solve this?

 

It goes something like this:

Code (CSharp):

1.  
2. using UnityEngine;
3. using Cinemachine;
4.  
5. [ExecuteInEditMode]
6. public class BoxConfinerPerspective : MonoBehaviour
7. {
8.     GameObject currentVirtualCam;
9.     GameObject mainCam;
10.     CinemachineVirtualCamera currentVirtualCamComponent;
11.  
12.     void Awake () {
13.         mainCam = GameObject.Find("Main Camera");
14.     }
15.  
16.     void Start()
17.     {
18.         var cinemachineBrain = mainCam.GetComponent<CinemachineBrain>(); //returns the brain GameObject
19.         var activeVirtualCamera = cinemachineBrain.ActiveVirtualCamera; //returns null, before returned first camera to be displayed
20.         currentVirtualCam = activeVirtualCamera.VirtualCameraGameObject; //now returns System.NullReferenceException
21.  
22.         currentVirtualCamComponent = currentVirtualCam.GetComponent<CinemachineVirtualCamera>();
23.         //do things based on currentVirtualCamComponent properties
24.     }
25.  
26.     void Update()
27.     {
28.         //do things in editor, while not playing, which depends on properties of currentVirtualCamComponent
29.     }
30.  
31.     void FixedUpdate()
32.     {
33.         currentVirtualCam = mainCam.GetComponent<CinemachineBrain>().ActiveVirtualCamera.VirtualCameraGameObject;
34.      
35.         currentVirtualCamComponent = currentVirtualCam.GetComponent<CinemachineVirtualCamera>();
36.         //do other things based on currentVirtualCamComponent properties, while playing
37.    }
38. }
39.  

 

Ok, i changed the initialization from the Start method to the LateUpdate method, and also moved everything that was in the Update to the LateUpdate. Initialization is using a trigger now. This means that for every frame I'm checking if it was initialized with an if-statement, which is not optimal, but also not critical.

I still get NullReferenceException once, everytime I go into play mode nd everytime I stop it. Still not a problem, though.

Everything is working again now, thanks!