Unity项目初始化出现NullReferenceException错误的原因及解决方法

问题现象 #

每次创建新Unity项目时都会抛出以下空引用异常：

NullReferenceException: Object reference not set to an instance of an object
Unity.PlasticSCM.Editor.ProjectDownloader.ParseArguments.GetOrganizationNameFromData (System.String data) (at Library/PackageCache/com.unity.collab-proxy@2.0.3/Editor/PlasticSCM/CloudProjectDownloader/ParseArguments.cs:42)
Unity.PlasticSCM.Editor.ProjectDownloader.ParseArguments.CloudOrganization (System.Collections.Generic.Dictionary`2[TKey,TValue] args) (at Library/PackageCache/com.unity.collab-proxy@2.0.3/Editor/PlasticSCM/CloudProjectDownloader/ParseArguments.cs:24)
Unity.PlasticSCM.Editor.ProjectDownloader.CloudProjectDownloader.DownloadRepository (System.String unityAccessToken, System.String[] commandLineArgs) (at Library/PackageCache/com.unity.collab-proxy@2.0.3/Editor/PlasticSCM/CloudProjectDownloader/CloudProjectDownloader.cs:63)
Unity.PlasticSCM.Editor.ProjectDownloader.CloudProjectDownloader.DownloadRepository (System.String unityAccessToken) (at Library/PackageCache/com.unity.collab-proxy@2.0.3/Editor/PlasticSCM/CloudProjectDownloader/CloudProjectDownloader.cs:51)
Unity.PlasticSCM.Editor.ProjectDownloader.CloudProjectDownloader.Execute (System.String unityAccessToken) (at Library/PackageCache/com.unity.collab-proxy@2.0.3/Editor/PlasticSCM/CloudProjectDownloader/CloudProjectDownloader.cs:43)
Unity.PlasticSCM.Editor.ProjectDownloader.CloudProjectDownloader.RunOnceWhenAccessTokenIsInitialized () (at Library/PackageCache/com.unity.collab-proxy@2.0.3/Editor/PlasticSCM/CloudProjectDownloader/CloudProjectDownloader.cs:32)
UnityEditor.EditorApplication.Internal_CallUpdateFunctions () (at <b55589eb06c2466f99929d8dd849fc32>:0)

解决步骤 #

• 禁用Plastic SCM集成
  打开Unity Hub → 设置 → 服务，取消勾选"Plastic SCM"；或者在Unity编辑器内，依次点击编辑 → 项目设置 → 版本控制，将模式改为"Visible Meta Files"或"Disabled"。

• 更新/重装Collab Proxy包
  打开Package Manager（Window → Package Manager），找到"Collab Proxy"（com.unity.collab-proxy），先尝试更新到最新版本；若无效则卸载后重新安装。

• 清理Library文件夹
  关闭Unity编辑器，删除项目根目录下的Library文件夹，重新打开项目让Unity自动重建该目录。

• 检查Unity账号登录状态
  确保已正常登录Unity账号，无权限异常；可尝试退出账号后重新登录，再创建新项目。

• 切换Unity版本
  若当前使用的Unity版本存在兼容问题，尝试升级到最新稳定版，或更换一个已知稳定的版本创建项目。

内容的提问来源于stack exchange，提问作者Huiming