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Fixed in 2020.1.X

Fixed in 2019.4.X



Found in


Issue ID




Animator Override Controller set on Runtime on Model using IK Constraints results with Errors and Warnings



Using the model with IK Constraints from Animation Rigging preview package and setting Animator Override Controller on Runtime results in Warnings and Errors

To reproduce:

1. Download attached "" project and open in Unity
2. Open "ReproScene" scene
3. Enter to Play Mode
4. Observe that Console spams Errors and Warnings:

"Could not resolve 'rig/ik/lfik' because the avatar is invalid. Please assign a valid Avatar or create one with AvatarBuilder.
TestAnimOverride:Start() (at Assets/Scripts/TestAnimOverride.cs:34)"

"System.InvalidOperationException: The TransformStreamHandle cannot be resolved.
Thrown from job: UnityEngine.Animations.Rigging.TwoBoneIKConstraintJob"

5. Exit from Play mode
6. In Hierarchy select "root" gameObject and in Inspector change Type of Instancing to Existing Override of Test Anim Override Component
7. Enter to Play mode
8. Same Warnings and Errors appear again in Console

Expected results: Setting Animator Override Controller in runtime should work
Current results: No matter if Animator Override Controller is already created in project or it is created while in runtime same errors appear when one is assigned during runtime

- Could not check for Regression on Unity 2018.4 and lower because the Project becomes Corrupted
- Could not check for Package Regression on preview - 0.1.4 and lower because the Project becomes Corrupted

Reproduced on Package preview - 0.2.3 and preview - 0.2.1

Reproduced on 2019.2.4f1, 2019.3.0b2 and 2020.1.0a3

  1. Resolution Note (fix version 2019.4):

    Fixed in 2019.4.36f1_660c164b2fc5

Comments (3)

  1. anycolourulike

    Oct 27, 2021 19:34

    Still an issue

  2. Algebrainer

    Aug 16, 2020 21:48

    Had this with version 2019.3.2f1. Resolved in 2020.1.0f1

  3. Invisible_Wrench

    Oct 26, 2019 08:45

    Im blocked by this in 2019.2.10, any way to resolve this?

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