Spammed with a Null Reference exception in Animator

Question

I don't know how to track down what asset is missing... this is an editor error, not an in-game issue.

Works fine in-game.

However, my game started taking 20-50 seconds to load after this error began:

 NullReferenceException: Object reference not set to an instance of an object
 UnityEditor.Graphs.AnimationStateMachine.TransitionEditionContext.BuildNames () (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/AnimationStateMachine/TransitionEditionContext.cs:44)
 UnityEditor.Graphs.AnimationStateMachine.TransitionEditionContext..ctor (UnityEditor.Animations.AnimatorTransitionBase aTransition, UnityEditor.Animations.AnimatorState aSourceState, UnityEditor.Animations.AnimatorStateMachine aSourceStateMachine, UnityEditor.Animations.AnimatorStateMachine aOwnerStateMachine) (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/AnimationStateMachine/TransitionEditionContext.cs:28)
 UnityEditor.Graphs.AnimationStateMachine.AnimatorTransitionInspectorBase.ComputeTransitionContexts () (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/AnimationStateMachine/AnimatorTransitionInspectorBase.cs:125)
 UnityEditor.Graphs.AnimationStateMachine.AnimatorTransitionInspectorBase.OnEnable () (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/AnimationStateMachine/AnimatorTransitionInspectorBase.cs:87)
 UnityEditor.Graphs.AnimationStateMachine.AnimatorStateTransitionInspector.OnEnable () (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/AnimationStateMachine/AnimatorStateTransitionInspector.cs:55)

Answer 1

Answer by mezcalito · Apr 05, 2015 at 02:09 PM

it also happened to me when I was adding extra animation states and then I removed them, just followed Wildan suggestion to close Unity and reopen it again and that fixed it for me

Add comment · Share

Answer 2

Answer by eweeparker · Jun 10, 2015 at 08:49 AM

Actually I noticed that when changing my "has exit time" checkbox in an animation state, my FindGameObjectWithTag("Player") script references will no longer work. You have to restart it to recompile everything correctly. An interesting situation since everything works fine otherwise. I just wonder if you were altering animation states when this happened.

Add comment · Share

Answer 3

Answer by turkiyecng · Aug 25, 2015 at 02:51 PM

I got same error . But i fixed that deleting all meta files in assets folder/subfolder inside. If unity running close unity and after delete (meta files). Its must work .

Add comment · Share

Answer 4

Answer by twobob · Sep 29, 2015 at 08:01 PM

It's a bug. Restart Editor

Add comment · Show 1 · Share

ldankarberg · Jul 21, 2020 at 04:46 AM 1

Share

This worked! Thank you!

Answer 5

Wiki

Answer by Vivek-Savsaiya · Mar 21, 2015 at 06:50 PM

NullReferenceException means the object referenced doesn't exist. It's not exclusive to scripting. If you deleted the actual animation file from your object you'll have to reload the object.

or

in my case I copied a gameobject whose have a animator Controller, for solving I just again assigned a controller in animator(inspector), thats resolve my error. hope this will help you

Add comment · Share

Spammed with a Null Reference exception in Animator

9 Replies

Your answer

Follow this Question

Related Questions