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【Unity2022】error CS0006 Metadata file 'Library/PackageCache/ ~.dll' could not be found. のエラーの解決策

Last updated at Posted at 2024-12-05

エラーが起きた手順と内容

UnityHub の New Project から 3D(Build-In Render Pipeline) を選択してプロジェクトを新規作成すると,以下のエラーがconsoleに出現

error CS0006: Metadata file 'Library/PackageCache/com.unity.collab-proxy@2.6.0/Lib/Editor/PlasticSCM/log4netPlastic.dll' could not be found
error CS0006: Metadata file 'Library/PackageCache/com.unity.collab-proxy@2.6.0/Lib/Editor/PlasticSCM/Unity.Plastic.Antlr3.Runtime.dll' could not be found
error CS0006: Metadata file 'Library/PackageCache/com.unity.collab-proxy@2.6.0/Lib/Editor/PlasticSCM/Unity.Plastic.Newtonsoft.Json.dll' could not be found

解決策

Unityを一度落として,Libraryフォルダを削除する.
UnityHubから再度プロジェクトを起動する.
キャッシュが再構成されると治った.

実行環境(参考)

  • Unity Hub 3.10.0
  • Unity Editor 2022.3.11f1
  • Windows10 22H2

所感

今まではこんなエラーは出現していなかったので,UnityHubのアップデートによる問題?なのかと思っています.

参考

根本的な解決方法

2022.3.55f1 にアップデートしたところ,この現象が解決したという報告がありました.
UnityEditorのバージョンアップで解決するみたいです.

(2025/02/05追記)

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