We have a legacy project running Unity 2017.2 that has just developed an issue out of nowhere. All of a sudden Vuforia is giving the following:
Exception in callback: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.MissingMethodException: Method not found: 'UnityEngine.Application.add_quitting'.
We are running Vuforia 7.1.35 and have managed to do a release on this version without issue before.
If we upgrade to Unity 2018.1 this goes away, but we cannot release this product with the engine upgraded currently. Can anyone shed some light on to what is wrong and how we might fix as this is blocking a release for us.