MvcScaffolding NuGetインストール：「同じキーを持つアイテムが既に追加されています」

Question

NuGetを通じてMvcScaffoldingをインストールするときにエラーが発生します。問題を解決する方法を知っている人はいますか？私は、このコマンドを使用して再インストールをアンインストールしようとした

PM> install-Package MvcScaffolding -Verbose 
Dependency 'T4Scaffolding (≥ 1.0.0)' already installed. 
Dependency 'EntityFramework (≥ 4.1.10311.0)' already installed. 
Added file 'InstallationDummyFile.txt' to folder 'MvcScaffolding.1.0.0\content'. 
Added file 'Action.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'Action.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'ActionPost.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'ActionPost.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'MvcScaffolding.Action.ps1' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'ViewModel.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'ViewModel.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\Action'. 
Added file 'MvcScaffolding.ActionUnitTest.ps1' to folder 'MvcScaffolding.1.0.0\tools\ActionUnitTest'. 
Added file 'TestClass.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\ActionUnitTest'. 
Added file 'TestClass.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\ActionUnitTest'. 
Added file 'TestMethod.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\ActionUnitTest'. 
Added file 'TestMethod.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\ActionUnitTest'. 
Added file 'MvcScaffolding.ActionWithUnitTest.ps1' to folder 'MvcScaffolding.1.0.0\tools\ActionWithUnitTest'. 
Added file 'Create.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Create.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'CreateOrEdit.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'CreateOrEdit.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Delete.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Delete.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Details.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Details.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Edit.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Edit.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Empty.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Empty.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Index.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'Index.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'MvcScaffolding.AspxView.ps1' to folder 'MvcScaffolding.1.0.0\tools\AspxView'. 
Added file 'ControllerWithContext.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\Controller'. 
Added file 'ControllerWithContext.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\Controller'. 
Added file 'ControllerWithRepository.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\Controller'. 
Added file 'ControllerWithRepository.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\Controller'. 
Added file 'MvcScaffolding.Controller.ps1' to folder 'MvcScaffolding.1.0.0\tools\Controller'. 
Added file 'MvcScaffolding.ControllerWithRepository.ps1' to folder 'MvcScaffolding.1.0.0\tools\Controller'. 
Added file 'init.ps1' to folder 'MvcScaffolding.1.0.0\tools'. 
Added file 'install.ps1' to folder 'MvcScaffolding.1.0.0\tools'. 
Added file 'Create.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Create.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Delete.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Delete.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Details.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Details.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Edit.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Edit.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Empty.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Empty.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Index.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'Index.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'MvcScaffolding.RazorView.ps1' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file '_CreateOrEdit.cs.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file '_CreateOrEdit.vb.t4' to folder 'MvcScaffolding.1.0.0\tools\RazorView'. 
Added file 'registerWithMvcTooling.ps1' to folder 'MvcScaffolding.1.0.0\tools'. 
Added file 'MvcScaffolding.Views.ps1' to folder 'MvcScaffolding.1.0.0\tools\Views'. 
Added file 'MvcScaffolding.1.0.0.nupkg' to folder 'MvcScaffolding.1.0.0'. 
Successfully installed 'MvcScaffolding 1.0.0'. 
Executing script file 'C:\MyProject\packages\MvcScaffolding.1.0.0\tools\init.ps1'. 
Added file 'InstallationDummyFile.txt'. 
Added file 'InstallationDummyFile.txt' to project 'ReinsuranceManagementWebUI' 
Added file 'packages.config'. 
Added file 'packages.config' to project 'ReinsuranceManagementWebUI' 
Successfully added 'MvcScaffolding 1.0.0' to ReinsuranceManagementWebUI. 
Executing script file 'C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1'. 
Get-ProjectItem : An item with the same key has already been added. 
At C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1:22 char:16 
+ Get-ProjectItem <<<< "InstallationDummyFile.txt" -Project $projectName | %{ $_.Delete() } 
    + CategoryInfo   : NotSpecified: (:) [Get-ProjectItem], ArgumentException 
    + FullyQualifiedErrorId : T4Scaffolding.Cmdlets.GetProjectItemCmdlet 

Set-DefaultScaffolder : An item with the same key has already been added. 
At C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1:24 char:22 
+ Set-DefaultScaffolder <<<< -Name Controller -Scaffolder MvcScaffolding.Controller -SolutionWide -DoNotOverwriteExistingSetting 
    + CategoryInfo   : NotSpecified: (:) [Set-DefaultScaffolder], ArgumentException 
    + FullyQualifiedErrorId : T4Scaffolding.Cmdlets.SetDefaultScaffolderCmdlet 

Set-DefaultScaffolder : An item with the same key has already been added. 
At C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1:25 char:22 
+ Set-DefaultScaffolder <<<< -Name Views -Scaffolder MvcScaffolding.Views -SolutionWide -DoNotOverwriteExistingSetting 
    + CategoryInfo   : NotSpecified: (:) [Set-DefaultScaffolder], ArgumentException 
    + FullyQualifiedErrorId : T4Scaffolding.Cmdlets.SetDefaultScaffolderCmdlet 

Set-DefaultScaffolder : An item with the same key has already been added. 
At C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1:26 char:22 
+ Set-DefaultScaffolder <<<< -Name Action -Scaffolder MvcScaffolding.Action -SolutionWide -DoNotOverwriteExistingSetting 
    + CategoryInfo   : NotSpecified: (:) [Set-DefaultScaffolder], ArgumentException 
    + FullyQualifiedErrorId : T4Scaffolding.Cmdlets.SetDefaultScaffolderCmdlet 

Set-DefaultScaffolder : An item with the same key has already been added. 
At C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1:27 char:22 
+ Set-DefaultScaffolder <<<< -Name UnitTest -Scaffolder MvcScaffolding.ActionUnitTest -SolutionWide -DoNotOverwriteExistingSetting 
    + CategoryInfo   : NotSpecified: (:) [Set-DefaultScaffolder], ArgumentException 
    + FullyQualifiedErrorId : T4Scaffolding.Cmdlets.SetDefaultScaffolderCmdlet 

Set-DefaultScaffolder : An item with the same key has already been added. 
At C:\MyProject\packages\MvcScaffolding.1.0.0\tools\install.ps1:31 char:22 
+ Set-DefaultScaffolder <<<< -Name View -Scaffolder $viewScaffolder -SolutionWide -DoNotOverwriteExistingSetting 
    + CategoryInfo   : NotSpecified: (:) [Set-DefaultScaffolder], ArgumentException 
    + FullyQualifiedErrorId : T4Scaffolding.Cmdlets.SetDefaultScaffolderCmdlet 

は：

Uninstall-Package MvcScaffolding -RemoveDependencies 

Answer 1

元の質問にコメントで述べたように、私が見る、これはMVC足場のバグであると考えている：http://mvcscaffolding.codeplex.com/workitem/27

Answer 2

私もこのエラーに問題がありました。私のために働いたのは、 'Uninstall-Package T4Scaffolding'のようにMvcScaffoldingとそれぞれの依存関係をアンインストールごとに別々のコマンドでアンインストールすることでした。また、ドライブとソースコントロールから関連するファイルやフォルダを削除しました。その後、私は再インストールされ、すべて正常だった。ファイルの削除が重要なようだった。