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Fixed in 2022.1.X



Found in



Issue ID




"BlendTreeWorkspace is NULL" error spam while a BlendTree state is open in Animator Window after saving scene



Steps to reproduce:
1. Open attached "" Unity project
2. Open "test" scene
3. Double-click "New Animator Controller" asset to open the Animator Window
4. Open "Blend Tree" state
5. Create a new object in Hierarchy window to dirty the scene and save scene

Expected result: No errors are thrown
Actual result: Multiple "BlendTreeWorkspace is NULL" errors are thrown while Blend Tree state is open in Animator Window and new errors keep appearing every time the animator window is repainted
BlendTreeWorkspace is NULL
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

Reproduced with: 2021.2.0b1, 2021.2.0a18
Didn't reproduce on: 2021.2.0a17, 2021.1.13f1, 2020.3.13f1, 2019.4.28f1

Comments (16)

  1. HajiyevEl

    Apr 06, 2022 12:08

    Same issue with version 2021.2.17f1

  2. SurreyMuso

    Feb 28, 2022 10:37

    Also in 2021.2.10f1

  3. Westland

    Feb 17, 2022 21:49

    Also still getting in 2021.2.8f1

  4. Zoonman

    Feb 03, 2022 16:15

    Still got the issue in 2021.2.8f1

  5. fanus

    Jan 21, 2022 22:41

    Issue exists in 2021.2.8f1

  6. der_Eli

    Jan 09, 2022 13:03

    I got this exact issue with version 2021.2.7f1

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