ARFoundation crashes when changing from AR scene to normal scene

Unity Engine
,
1

Only seems to affect iOS devices.

Is there a way to stop this from happening?

2

It’s related to this issue. It happens the second time you disable the AR subsystems (this would happen after scene switching a couple of times). The fix is ready and working its way through QA. We should be able to release an update soon.

3

ah, thanks!

4

Was there an update on this? It’s kind of a showstopper for us as with others commenting in that issue.

When I leave an ARFoundation scene and go back in (game > titlescreen > game) AR flatout stops working and I get a bunch of errors in XCode about planemanager.

NullReferenceException: A null value was found where an object instance was required.
  at UnityEngine.MonoBehaviour.StartCoroutine (IEnumerator routine) [0x00000] in <filename unknown>:0
  at System.Action`1[T].Invoke (.T obj) [0x00000] in <filename unknown>:0
  at System.Action`1[T].Invoke (.T obj) [0x00000] in <filename unknown>:0
  at System.Action`1[T].Invoke (.T obj) [0x00000] in <filename unknown>:0
  at UnityEngine.XR.ARFoundation.ARSubsystemManager.OnPlaneAdded (PlaneAddedEventArgs eventArgs) [0x00000] in <filename unknown>:0
  at System.Action`1[T].Invoke (.T obj) [0x00000] in <filename unknown>:0
  at UnityEngine.Experimental.XR.XRPlaneSubsystem.InvokePlaneAddedEvent (BoundedPlane plane) [0x00000] in <filename unknown>:0
(Filename: currently not available on il2cpp Line: -1)
5

I don’t think this is related. Are you unregistering from the planeadded event in ondisable?

void OnDisable()
        {
            ARSubsystemManager.planeAdded -= OnPlaneAdded;
        }
6

thank you! All fixed