未处理的异常:System.IO.IOException:进程无法访问文件'xxx.nupkg'因为它正

我正在尝试使用windows (版本1.0.0.0)松鼠，没有办法摆脱这个错误。

我已经做了所有的事情来确保那个文件确实没有被使用。

以下步骤在我的PC上重现错误。

1. 创建releasify的nuget包
2. 重启电脑
3. 只打开命令提示符(没有其他应用程序在运行，甚至没有visual studio)
4. 执行squirrel --releasify Digger.1.0.0.1.nupkg
命令

奇怪的是，我能够在从releasify命令中获得错误后立即删除文件:

日志如下:

2015-08-30 17:28:03> Program: Starting Squirrel Updater: --releasify Digger.1.0.0.1.nupkg
2015-08-30 17:28:03> Program: Bootstrapper EXE found at:C:'dev'utils'squirrel'Setup.exe
2015-08-30 17:28:03> Program: Creating release package: C:'dev'projects'ThirdParty'inmediati'Digger'Digger.Cliente.WPF'Releases'Digger.1.0.0.1.nupkg
2015-08-30 17:28:03> ReleasePackage: Creating release package: C:'dev'projects'ThirdParty'inmediati'Digger'Digger.Cliente.WPF'Releases'Digger.1.0.0.1.nupkg => C:'dev'projects'ThirdParty'inmediati'Digger'Digger.Cliente.WPF'Releases'Digger-1.0.0.1-full.nupkg
2015-08-30 17:28:03> ReleasePackage: Extracting dependent packages: []
2015-08-30 17:28:03> ReleasePackage: Removing unnecessary data
2015-08-30 17:28:03> ReleasePackage: No release notes found in C:'Users'Juan'AppData'Local'SquirrelTemp'tempa'Digger.nuspec
2015-08-30 17:28:03> Unhandled exception: System.IO.IOException: The process cannot access the file 'C:'dev'projects'ThirdParty'inmediati'Digger'Digger.Cliente.WPF'Releases'Digger.1.0.0.1.nupkg' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.File.InternalDelete(String path, Boolean checkHost)
   at System.IO.File.Delete(String path)
   at Squirrel.Update.Program.Releasify(String package, String targetDir, String packagesDir, String bootstrapperExe, String backgroundGif, String signingOpts, String baseUrl, String setupIcon)
   at Squirrel.Update.Program.executeCommandLine(String[] args)
   at Squirrel.Update.Program.main(String[] args)

BTW: nuget包是使用Any CPU构建创建的。