unity build_error ai_generated partial

IL2CPP error: System.FieldAccessException: Field 'PlayerData.score' accessed from method 'PlayerController.Update' has incorrect offset 0x0004

ID: unity/il2cpp-field-offset-error

Also available as: JSON · Markdown · 中文
75%Fix Rate
82%Confidence
1Evidence
2024-06-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Unity 2022.3 active — — —
Unity 2023.2 active — — —
IL2CPP 2023 active — — —

Root Cause

IL2CPP code generation produces incorrect field offsets due to struct layout changes or version mismatch between editor and player assemblies.

generic

中文

IL2CPP代码生成由于结构体布局更改或编辑器和玩家程序集版本不匹配而产生错误的字段偏移量。

Official Documentation

https://docs.unity3d.com/Manual/IL2CPP-ErrorMessages.html

Workarounds

  1. 80% success Delete the Library/Bee and Library/IL2CPPCache directories, then rebuild from scratch to force fresh code generation. 
    Delete the Library/Bee and Library/IL2CPPCache directories, then rebuild from scratch to force fresh code generation.
  2. 70% success Ensure all assemblies are compiled with the same .NET version. Check Player Settings > Configuration > Api Compatibility Level and set to .NET Standard 2.1. Then perform a clean build. 
    Ensure all assemblies are compiled with the same .NET version. Check Player Settings > Configuration > Api Compatibility Level and set to .NET Standard 2.1. Then perform a clean build.

中文步骤

  1. Delete the Library/Bee and Library/IL2CPPCache directories, then rebuild from scratch to force fresh code generation.
  2. Ensure all assemblies are compiled with the same .NET version. Check Player Settings > Configuration > Api Compatibility Level and set to .NET Standard 2.1. Then perform a clean build.

Dead Ends

Common approaches that don't work:

  1. 60% fail

    Rebuilding the player without cleaning the library folder often keeps stale cached assemblies with wrong offsets.

  2. 40% fail

    Changing the struct field order in code without updating all references can cause mismatched offsets.