Activating -XRtrackingonly in UE 5.4 crashes the editor when launching NDisplay

Development Cinematics & Media Virtual Production
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Ever since they deprecated and removed SteamVR plugin, I’d seen on youtube, reddit, and Unreal Engine Forums that now you have to create a shortcut for the engine with the command-line argument “-XRtrackingonly” and activating OpenXR and the OpenXR Vive Tracker Plugins if you want to continue using the Vive Trackers for Virtual Production.

I tried it and the tracking works perfect in the editor, but when I hit the “NDisplay Launch” (with the plugin: NDisplay Launch) button the editor disappears completely.

On Switchboard, I can’t do real time editing while NDisplay is active because the editor also disappears when doing the same thing in there.

Has anyone found a solution for this or have another way to use NDisplay with Vive Trackers with no issues in UE 5.4?

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There are a few things that we are looking into. Honestly right now we are seeing if this is something we can resolve on our end or not. If you can use LL Hub that would seem to be a way to get around rebroadcasting.

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Hello Shaun! Apologies for responding days later.

Thank you for looking looking into the issue!

About LLHub. I have noticed that LL Hub supports mocap sources, but I can’t find how to activate the Vive Tracker or VR controllers sources inside LL Hub. I was thinking it was the “LiveLinkInputDevice Source” to activate them, but it is stuck on “Waiting for Device” under it’s status and everything is turned on. I can’t find a way to get it to find the Vive Trackers and/Or VR controls.