ValveSoftware/steamvr_unreal_plugin

Grip input not working suddenly. Seems to be an issue with "Mismatched Action Manifest" [UE 4.25]

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#192 opened on Jan 23, 2022

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good first issue

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Description

I'm stumped. I'm having strange input issues that seem related to SteamVR input. All of the inputs work except the Grip input (assigned to the Vive MC triggers). However I'm getting different results from different builds and configurations:

Editor - Everything works as expected Development - Grip doesn't work. Shipping - Grip works as longs as I DON'T include the "steam_appid" file in "PROJECT NAME/binaries/Win64 folder"

If I look at the log for the Dev build I notice this "Mismatched Action Manifest" error. See below...

[2022.01.23-22.56.56:305][ 0]LogSteamVRInputDevice: Display: SteamVR runtime 1.5.17 loaded. [2022.01.23-22.56.56:305][ 0]LogSteamVRInputDevice: Display: Action Manifest Path: ../../../EB_APT/Config/SteamVRBindings/steamvr_manifest.json [2022.01.23-22.56.56:305][ 0]LogSteamVRInputDevice: Display: Controller Bindings Path: ../../../EB_APT/Config/SteamVRBindings [2022.01.23-22.56.56:313][ 0]LogSteamVRInputDevice: Searching for Controller Bindings files at: ../../../EB_APT/Config/SteamVRBindings [2022.01.23-22.56.56:315][ 0]LogSteamVRInputDevice: Display: [STEAMVR INPUT] Trying to load Action Manifest from: E:\toneRoomsVR\Unreal\EndlessBecoming_Apartment_1\Packages\Development\WindowsNoEditor\EB_APT\Config\SteamVRBindings\steamvr_manifest.json [2022.01.23-22.56.56:315][ 0]LogSteamVRInputDevice: Error: [STEAMVR INPUT] Setting Action Manifest Path Result: Mismatched Action Manifest [2022.01.23-22.56.56:315][ 0]LogSteamVRInputDevice: Display: [STEAMVR INPUT] Setting main action set: Success

Just recently I changed the input naming convention from "Grab" to "Grip" within Unreal and I'm guessing this change may be a root cause. It seems like the new "Grip" command is not being referenced in the Unreal app. However if I test the binding in the SteamVR option menu this new "Grip" input is being referenced and testing correctly.

It seems like Unreal is finding the action manifest but there is a mismatch, but what is it being compared with? Is it referencing the action manifest of the version available on Steam perhaps? I'm still very new to publishing on Steam so there is much I still don't fully understand.

I also recently moved the entire project to a new drive so that may have affected something.

Any suggestion would be appreciated. I've tried most of the solutions on this forum already.

Contributor guide

Research direction
Examine the 'Mismatched Action Manifest' error by comparing the contents of the SteamVR action manifest file (steamvr manifest.json) with the actions defined in the Unreal project. Verify that the renamed input ('Grip') is correctly referenced in the manifest and controller bindings. Also check file paths after moving the project to a new drive.
Tech stack
cpp
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C++Unreal EngineSteamVR
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30