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Bug BlendTreeWorkspace is NULL in the console window when the animator controller tab window is opened.

Discussion in 'Editor & General Support' started by haimmoshe, Jun 27, 2022.

  1. haimmoshe

    haimmoshe

    Joined:
    Jun 3, 2017
    Posts:
    237
    I'm using unity3d editor version 2021.3.2f1 personal and suddenly now i'm getting this exception nonstop and when i click or move the mouse over the editor the exception is getting more and more in the console window.

    It wasn't 10 minutes ago and never at all and suddenly it started some few minutes ago.

    I tried to google for a solution but didn't find any yet.

    BlendTreeWorkspace is NULL UnityEngine.GUIUtility:processEvent (int,intptr,bool&)

    It looks like that if i close the Animator Controller tab window the exception not show anymore but when i open the animator controller tab again the exception show again.

     
    haimmoshe, Jun 27, 2022
    #1
    savantedroid likes this.

  2. a_ercanbrack

    a_ercanbrack

    Joined:
    Dec 15, 2020
    Posts:
    2
    I've got it too.
     
    a_ercanbrack, Aug 13, 2022
    #2

  3. graham30

    graham30

    Joined:
    Oct 17, 2019
    Posts:
    5
    I've got the same issue (Unity version 2021.3.4f1) . . . is this an editor bug? If so, is there any fixes yet?
     
    graham30, Aug 23, 2022
    #3

  4. Kutleye

    Kutleye

    Joined:
    Jul 26, 2022
    Posts:
    1
    Did you fix this error. I have this error too.
     
    Kutleye, Sep 7, 2022
    #4

  5. joeface71

    joeface71

    Joined:
    Aug 30, 2020
    Posts:
    2
    Restarting the editor cleared the error for me
     
    joeface71, Sep 17, 2022
    #5
    nhatminhho136 likes this.

  6. ibx00

    ibx00

    Joined:
    Jul 17, 2018
    Posts:
    7
    It happened to me when copying a blend tree from one animation controller to another and after opening/double-clicking the blend tree to make the edits. Found that the blend tree graph in inspector was empty. So toggled the blend type to another and back to what it was and the errors disappear.
     
    ibx00, Oct 25, 2022
    #6
    HoshimiyaSio, Rany_AN, FhStp-XR-Dev and 2 others like this.

  7. ArHiFranki

    ArHiFranki

    Joined:
    May 3, 2015
    Posts:
    1
    Thank you! I have same issue on Unity version 2021.3.14f1 and your solution has fix the problem!
     
    ArHiFranki, Nov 20, 2022
    #7

  8. unity_40617F25654003EF2B82

    unity_40617F25654003EF2B82

    Joined:
    Nov 29, 2022
    Posts:
    2
    Hi all!! I'm NicoTiza (i just changed my nickname but i don't see it already).... I just see that i have the same problem and I'm using Mixamo stuff... I see that files are read only... and one of that was wroken (I'm really new in Unity, in student state). The file wroken was "mixamo.com" animation... Just deleted them from blend tree and now the error dissapear... For some reason there was a conflict with Humanoid Clips... so, i will start again and try to not get that error.
     
    unity_40617F25654003EF2B82, Nov 29, 2022
    #8

  9. unity_40617F25654003EF2B82

    unity_40617F25654003EF2B82

    Joined:
    Nov 29, 2022
    Posts:
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    May be this would help
     

    Attached Files:

    unity_40617F25654003EF2B82, Nov 29, 2022
    #9

  10. ibx00

    ibx00

    Joined:
    Jul 17, 2018
    Posts:
    7
    Glad it helped!
     
    ibx00, Dec 7, 2022
    #10
    Plepin likes this.

  11. YuzenPro

    YuzenPro

    Joined:
    Sep 15, 2021
    Posts:
    3
    Try changing the animation type in the import settings > Rig folder.
     
    YuzenPro, Dec 22, 2022
    #11

  12. lichking8568

    lichking8568

    Joined:
    May 7, 2022
    Posts:
    2
    go in "window" then go in "Layouts" then press "Reset All Layouts".
     
    lichking8568, Mar 16, 2023
    #12
    HoshimiyaSio, Xdvinx, KDstar and 2 others like this.

  13. engralihaiderkhan

    engralihaiderkhan

    Joined:
    Jun 3, 2022
    Posts:
    2
    this helped for me by changing just the layout to my save layout
     
    engralihaiderkhan, Nov 21, 2023
    #13

  14. v2-Ton-Studios

    v2-Ton-Studios

    Joined:
    Jul 18, 2012
    Posts:
    238
    My repro was:

    - Delete the default Blend Parameter
    - Then save
    - See error

    To fix:

    - Add back the Blend Parameter as a float
    - Delete all BlendTrees (maybe you can just delete one of them, but I deleted all)
    - Rebuild the BlendTrees
    - Save
    - Close animator window
    - Reopen animator window

    Hope that helps others.
     
    Last edited: Mar 2, 2024
    v2-Ton-Studios, Mar 2, 2024
    #14