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Blenchik
New Participant
July 1, 2025
Question

Object manipulator visual tool is bugged

After a recent update, I have experienced a strange issue where the Object manipulation tool (https://developers.meta.com/horizon-worlds/learn/documentation/desktop-editor/getting-started/user-interface/object-tools) is not showing up when clicking on an object in the world.

I have verified the object is not locked.

Here is what I see when I click on an object:

And in the center of my world I have what appears to be the object manipulation UI but showing in all directions and stuck in place (Can't interact with it)

The application logs show this repeatedly which may be relevant:

 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0 

NullReferenceException: Object reference not set to an instance of an object.
  at Facebook.SocialVR.Worlds.WorldBuilder.RotationManipulationHandle.Update () [0x00000] in <00000000000000000000000000000000>:0



Is there any way to help resolve this and allow me to use the visual Object tool again?

    4 replies

    Webscotty
    New Participant
    July 3, 2025

    The same for me! But its only at one of my worlds. Others working fine. Its now almost impossible to edit the world because it is no longer possible to delete, add or position objects. The editor hang up during such an operation. The only solution is to shut down the server or restart the editor.
    I hope for a quick solution.

    BlenchikAuthor
    New Participant
    July 3, 2025

    I was able to figure out that the issue is somehow related to the Mirror Gizmo.

    If you delete the Mirror Gizmo and then restart your editor. You should get the Object manipulation tool functioning again. At least that's what worked for me.

      EDDIEHQ
      New Participant
      July 4, 2025

      Confirmed. This worked for me on Eternalnight.club. I hope they figure that out on the next fix.

      I started a new world then it happened right when added a mirror.

      This was after the last update for sure

      Meeeeeeeeep

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