Unity Issue Tracker - NullReferenceException is thrown when creating State from a Selected Clip if that Clip is a Blend Tree

Fixed

Fixed in 6000.0.56f1, 6000.2.1f1, 6000.3.0a5

Votes

0

Found in

2022.3.64f1

6000.0.54f1

6000.1.14f1

6000.2.0b13

6000.3.0a3

Issue ID

UUM-113046

Regression

No

NullReferenceException is thrown when creating State from a Selected Clip if that Clip is a Blend Tree

-

Jul 29, 2025

Steps to reproduce:

Open any Project
Import the attached Unity Package
In the Project Browser search for "v2Animator" and open it
Double click the State "Running Blendtree"
Select either the "Walk" or "Run" Blend Tree
Go back to the Base Layer and right click anywhere on the black board
Select "Create State > From Selected Clip"

Actual results: Error "NullReferenceException: Object reference not set to an instance of an object
UnityEditor.Graphs.AnimationStateMachine.GraphGUI.AddStateFromSelectedMotionCallback (System.Object data) (at <ba877b655e90405cae8628ad9b835066>:0)
UnityEditor.GenericMenu.CatchMenu (System.Object userData, System.String[] options, System.Int32 selected) (at <dff6788e8d804d65aac3289e2f500ade>:0)" is logged

Expected results: No Error is logged and Blend Tree is not considered as a selected Clip

Reproducible with versions: 2022.3.64f1, 6000.0.54f1, 6000.1.14f1, 6000.2.0b13, 6000.3.0a3

Tested on (OS): Windows 11

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