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AA_Derek's avatar
AA_Derek
Honored Guest
1 month ago
Solved

Latest Q3 Headset Software Update Crashing Unity Play Mode w/ Meta Link Active

Hello, a few of our developers have encountered an issue where after receiving the latest Q3 headset software update we now receive immediate Unity crashes when entering play mode with link enabled. ...
Unity
  • AA_Pete's avatar
    AA_Pete
    1 month ago

    Yep. We reached out to Meta through another channel, and they said:

    This is a known regression in the v85 PC Link runtime affecting hand/body tracking initialization during Play Mode. We're actively investigating. In the meantime, you can work around it by renaming XR_EXT_hand_tracking.dll and XR_FB_body_tracking.dll to .bak in %OculusBase%Support\oculus-runtime\client-plugins\x64. This disables hand/body tracking over Link but restores editor stability.

    Which worked for us.

RainerTee's avatar
RainerTee
Honored Guest
1 month ago

The problem is with the OVRBody body tracking. Remove all OVRBody refs from the scene and crashing stops.

AA_Pete's avatar
AA_Pete
Honored Guest
1 month ago

Yep. We reached out to Meta through another channel, and they said:

This is a known regression in the v85 PC Link runtime affecting hand/body tracking initialization during Play Mode. We're actively investigating. In the meantime, you can work around it by renaming XR_EXT_hand_tracking.dll and XR_FB_body_tracking.dll to .bak in %OculusBase%Support\oculus-runtime\client-plugins\x64. This disables hand/body tracking over Link but restores editor stability.

Which worked for us.

  • spy0x's avatar
    spy0x
    Start Member
    1 month ago

    Hi, I'm in the same situation here. I was developing in Unity 6.3 with Meta Movement SDK Full Body Tracking ISDK and after last week Quest 3 automatic update (I noticed my quest3 controllers were updated), when playing my app the Unity Editor just crashes entirely without even sending an error log report.

    I thought I had broken something in my project by mistake. So I started a new Unity project and the issue remains... If you have any news about how to fix this, I would really appreciate it. This workaround probably is not going to work for me, because I need hand and body tracking over Link... what a headache :C

  • nalex66's avatar
    nalex66
    MVP
    30 days ago

    I was hoping this would fix it for me. but unfortunately not. Since the last headset update, Unity just hangs when I try to enter play mode in VR. If I quit out of Link, then Unity starts working.

    Edit: Turns out Virtual Desktop works fine with Unity. It's not quite as automatic a process, but at least I can get back to working on and testing my game.

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