Lilith VRChat V2.0.0: Bug Report & Troubleshooting

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028. Lilith_VRChat [v2.0.0] Bug Report: Dive Deep

Hey guys! Let's dive into the nitty-gritty of the 028. Lilith_VRChat [v2.0.0] avatar, specifically focusing on a bug report. This isn't just a random complaint; we're talking about a detailed analysis, aiming to understand and, hopefully, fix some issues. This report comes from the dsgarage community, highlighting specific problems within the VRChat environment. This information will help us to understand the issues and find solutions. We will explore the technical aspects, user experiences, and potential fixes. This will also help users to provide valuable feedback and contribute to the improvement of the VRChat experience.

Understanding the Core Issue

First off, we're looking at Report ID: 8bd72ce6, linked to the parent issue #342. The subject? The 028. Lilith_VRChat avatar, version v2.0.0. This report was generated on 2025-12-03T21:42:15+09:00, so it's a recent issue. The key area here is understanding that this report is about a bug, not a feature request or a general discussion. The goal is to pinpoint what's wrong so that it can be fixed. This detailed overview of the problem, including the date and time of the report, helps in tracking when the problem occurred and potentially what might have caused it. We will also learn about the specific version and provide context for identifying the issue. We'll get into the specifics of the bug and how it affects users.

Platform Specifics

This specific bug report is for the fbx4vrm platform. It indicates that the issue is related to how the avatar is implemented on this platform. The platform plays a critical role in understanding the context of the issue. Different platforms have different implementations and constraints that can cause problems. Knowing this helps to focus our troubleshooting efforts.

Deep Dive into the Technical Environment

Environmental Setup

Let's talk about the technical environment. The report provides a snapshot of the settings the user was running when they encountered the bug. Here's a breakdown:

  • FBX4VRM Version: 0.0.5. This specifies the version of the FBX to VRM conversion tool. This tool is very important for converting 3D models. The version number is essential, as newer or older versions might have compatibility issues.
  • Unity Version: 2022.3.22f1. This indicates the version of Unity the avatar was likely imported into. Unity is a game engine where many VRChat avatars are created and modified. The specific version can be crucial, as different Unity versions have different features and potential bugs. It is very important for the compatibility of the avatar with the user's setup.
  • UniVRM Version: unknown. The UniVRM version is not specified in the report. This is a common VRM importer/exporter for Unity. The absence of the version might make it harder to diagnose issues. It also affects the performance and the overall user experience. This might be a missing piece of information for troubleshooting.
  • Render Pipeline: Built-in. The render pipeline is set to 'Built-in'. This indicates how the scene is rendered in Unity. The choice of rendering pipeline can affect the visual quality and performance. If there are any rendering issues, this information is very important.
  • Platform: Windows 11 (10.0.26200) 64bit (AMD Ryzen 7 7840HS w/ Radeon 780M Graphics). This gives us the user's operating system, including the version, and the hardware. Knowing the hardware helps to identify performance issues and compatibility problems. The graphics card is very important for rendering avatars in VRChat.

Conversion Results and Bone Structure Analysis

The report shows that the conversion from the FBX to VRM format failed (❌ No). This is a very critical piece of information. The conversion failure can be due to various reasons, such as model complexity, missing textures, or compatibility issues. Without a successful conversion, the avatar cannot be used in VRChat. The absence of a successful conversion can be a major roadblock to getting the avatar to work properly. The lack of detailed information about the failure process does not help the troubleshooting process.

Bone Structure

  • Humanoid: Yes. Confirms the avatar is designed as a humanoid model. This is very important for VRChat to recognize the avatar.
  • T-Pose Valid: No. The T-Pose validation failure may suggest the avatar's initial pose doesn't meet the standard requirements. This can lead to animation or rigging issues in VRChat.
  • Bone Hierarchy Valid: Yes. The bone hierarchy is valid, which is a good sign. It indicates that the bones are structured in a way that the software can recognize and use.
  • Total Bones: 209. The total number of bones provides an insight into the complexity of the avatar's rigging.
  • Missing Recommended Bones: UpperChest, LeftToes, RightToes. The missing bones can be very problematic. This is very important for animations and tracking. The absence of these bones might cause issues with movement and animation.

Material and Notification Breakdown

Material Information

The report lists Total Materials: 8. The materials define how the avatar looks. Any material-related issues could affect the appearance of the avatar. The number of materials can affect the overall performance.

Notification Summary

The report includes a notification summary:

  • Info: 0
  • Warning: 1
  • Error: 0 The one warning indicates a potential area for concern. Warnings usually point to things that might cause problems, so it's something to investigate.

User's Perspective and Visual Evidence

User Feedback

User feedback is crucial. In this case, the user reported a [貫通]靴下が靴のメッシュ貫通, which translates to