Array index is out of bounds error in SkinnedMeshRendererExtension file

Unity Questions
1

Unity 6.000.2.0b8 / Latest Convai release.

Everything else works but I am getting this error spammed in the console:

Array index (5) is out of bounds (size=0)
UnityEngine.SkinnedMeshRenderer:SetBlendShapeWeight (int,single)
Convai.Scripts.Runtime.Extensions.SkinnedMeshRendererExtension:SetBlendShapeWeightInterpolate (UnityEngine.SkinnedMeshRenderer,int,single,single) (at Assets/Systems/Convai/Scripts/Runtime/Extensions/SkinnedMeshRendererExtension.cs:9)
Convai.Scripts.Runtime.Features.LipSync.Types.ConvaiVisemesLipSync:UpdateMeshRenderer (Convai.Scripts.Runtime.Features.LipSync.Models.SkinMeshRendererData) (at Assets/Systems/Convai/Scripts/Runtime/Features/LipSync/Types/ConvaiVisemesLipSync.cs:138)
Convai.Scripts.Runtime.Features.LipSync.Types.ConvaiVisemesLipSync:LateUpdate () (at Assets/Systems/Convai/Scripts/Runtime/Features/LipSync/Types/ConvaiVisemesLipSync.cs:33)

This is in the Convai Demo - All Features scene

2

A few others actually as well.

Array index (65) is out of bounds (size=0)
UnityEngine.SkinnedMeshRenderer:SetBlendShapeWeight (int,single)
Convai.Scripts.Runtime.Core.ConvaiBlinkingHandler:SetEyelidsBlendShapeWeight (single) (at Assets/Systems/Convai/Scripts/Runtime/Core/ConvaiBlinkingHandler.cs:223)
Convai.Scripts.Runtime.Core.ConvaiBlinkingHandler/<BlinkCoroutine>d__11:MoveNext () (at Assets/Systems/Convai/Scripts/Runtime/Core/ConvaiBlinkingHandler.cs:194)
UnityEngine.MonoBehaviour:StartCoroutine (System.Collections.IEnumerator)
Convai.Scripts.Runtime.Core.ConvaiBlinkingHandler:Start () (at Assets/Systems/Convai/Scripts/Runtime/Core/ConvaiBlinkingHandler.cs:137)
3

Hello @M_Richard_Hudson,

Welcome to the Convai Developer Forum!

This error means that script is trying to access a blendshape index that doesn’t exist on your character model, which is required for LipSync to function properly.

Have you made any changes to character model or script? Also, could you let us know which version of the Convai SDK you’re currently using? This will help us guide you more accurately.

4

No changes. Stock scene with Amelia character. SDK is v3.3.1

5

Thanks for the update. I’ve tested it on my end but couldn’t reproduce the issue. Could you please try reimporting the Convai SDK?

Also, since you’re using a beta version of Unity, I recommend testing the setup on an LTS (Long-Term Support) version instead, as beta versions can introduce unexpected behavior.