Where is the NuGet reference stored?

Question

I can't get this C# solution (click to download - 666MB or browse on GitHub here) to compile:

The error I'm getting is

This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is ..\packages\Accord.3.8.0\build\Accord.targets. bootcamp_basecamera C:\Users\MyUser\Desktop\ComputerVision_Bootcamp-master\bootcamp_basecamera\bootcamp_basecamera\bootcamp_basecamera.csproj 144

The line in question in boot_camp_basecamera.csproj is:

<Error Condition="!Exists('..\packages\Accord.3.8.0\build\Accord.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Accord.3.8.0\build\Accord.targets'))" />

I've gone through each and every NuGet question / solution here on StackOverflow, but none of the answers worked for me.

I tried package restore, I un-installed all NuGet packages manually and installed them again.

This didn't make the error messages go away.

I would therefore like to ask where exactely this error message originates from. It says "This project references...". I've even deleted the package.config files, and I'm still seeing this error.

Therefore I would like to ask where exactely this reference is stored, since it can't be packages.config (because I deleted them).

Thank you.

Per request, here is the contents of the .csproj file in question:

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\build\OpenCvSharp3-AnyCPU.props" Condition="Exists('..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\build\OpenCvSharp3-AnyCPU.props')" />
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{10F276C8-F8C8-43FB-90F3-B3F1F0B74A2C}</ProjectGuid>
    <OutputType>WinExe</OutputType>
    <RootNamespace>Bootcamp.CompVis.Webinar</RootNamespace>
    <AssemblyName>webinar</AssemblyName>
    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
    <NuGetPackageImportStamp>
    </NuGetPackageImportStamp>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>x64</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <PlatformTarget>x86</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
    <DebugSymbols>true</DebugSymbols>
    <OutputPath>bin\x64\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <DebugType>full</DebugType>
    <PlatformTarget>x64</PlatformTarget>
    <ErrorReport>prompt</ErrorReport>
    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
    <OutputPath>bin\x64\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <Optimize>true</Optimize>
    <DebugType>pdbonly</DebugType>
    <PlatformTarget>x64</PlatformTarget>
    <ErrorReport>prompt</ErrorReport>
    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
    <Prefer32Bit>true</Prefer32Bit>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Accord, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.3.8.2-alpha\lib\net46\Accord.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Controls.Imaging, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Controls.Imaging.3.8.2-alpha\lib\net46\Accord.Controls.Imaging.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Imaging, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Imaging.3.8.2-alpha\lib\net46\Accord.Imaging.dll</HintPath>
    </Reference>
    <Reference Include="Accord.MachineLearning, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.MachineLearning.3.8.2-alpha\lib\net46\Accord.MachineLearning.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Math, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Math.3.8.2-alpha\lib\net46\Accord.Math.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Math.Core, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Math.3.8.2-alpha\lib\net46\Accord.Math.Core.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Statistics, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Statistics.3.8.2-alpha\lib\net46\Accord.Statistics.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Video, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Video.3.8.2-alpha\lib\net46\Accord.Video.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Video.DirectShow, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Video.DirectShow.3.8.2-alpha\lib\net46\Accord.Video.DirectShow.dll</HintPath>
    </Reference>
    <Reference Include="Accord.Vision, Version=3.8.2.0, Culture=neutral, PublicKeyToken=fa1a88e29555ccf7, processorArchitecture=MSIL">
      <HintPath>..\packages\Accord.Vision.3.8.2-alpha\lib\net46\Accord.Vision.dll</HintPath>
    </Reference>
    <Reference Include="DlibDotNet, Version=1.0.0.0, Culture=neutral, processorArchitecture=AMD64">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>dlib\DlibDotNet.dll</HintPath>
    </Reference>
    <Reference Include="DlibDotNet.Extensions, Version=1.0.0.0, Culture=neutral, processorArchitecture=AMD64">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>dlib\DlibDotNet.Extensions.dll</HintPath>
    </Reference>
    <Reference Include="OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099, processorArchitecture=MSIL">
      <HintPath>..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\lib\net46\OpenCvSharp.dll</HintPath>
    </Reference>
    <Reference Include="OpenCvSharp.Blob, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099, processorArchitecture=MSIL">
      <HintPath>..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\lib\net46\OpenCvSharp.Blob.dll</HintPath>
    </Reference>
    <Reference Include="OpenCvSharp.Extensions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099, processorArchitecture=MSIL">
      <HintPath>..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\lib\net46\OpenCvSharp.Extensions.dll</HintPath>
    </Reference>
    <Reference Include="OpenCvSharp.UserInterface, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099, processorArchitecture=MSIL">
      <HintPath>..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\lib\net46\OpenCvSharp.UserInterface.dll</HintPath>
    </Reference>
    <Reference Include="PresentationCore" />
    <Reference Include="System" />
    <Reference Include="System.Core" />
    <Reference Include="System.Xml.Linq" />
    <Reference Include="System.Data.DataSetExtensions" />
    <Reference Include="Microsoft.CSharp" />
    <Reference Include="System.Data" />
    <Reference Include="System.Deployment" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.Net.Http" />
    <Reference Include="System.Windows.Forms" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="MainForm.cs">
      <SubType>Form</SubType>
    </Compile>
    <Compile Include="MainForm.Designer.cs">
      <DependentUpon>MainForm.cs</DependentUpon>
    </Compile>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
    <Compile Include="Utility.cs" />
    <EmbeddedResource Include="MainForm.resx">
      <DependentUpon>MainForm.cs</DependentUpon>
    </EmbeddedResource>
    <EmbeddedResource Include="Properties\Resources.resx">
      <Generator>ResXFileCodeGenerator</Generator>
      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
      <SubType>Designer</SubType>
    </EmbeddedResource>
    <Compile Include="Properties\Resources.Designer.cs">
      <AutoGen>True</AutoGen>
      <DependentUpon>Resources.resx</DependentUpon>
      <DesignTime>True</DesignTime>
    </Compile>
    <None Include="shape_predictor_68_face_landmarks.dat">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Include="packages.config" />
    <None Include="Properties\Settings.settings">
      <Generator>SettingsSingleFileGenerator</Generator>
      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
    </None>
    <Compile Include="Properties\Settings.Designer.cs">
      <AutoGen>True</AutoGen>
      <DependentUpon>Settings.settings</DependentUpon>
      <DesignTimeSharedInput>True</DesignTimeSharedInput>
    </Compile>
  </ItemGroup>
  <ItemGroup>
    <None Include="App.config">
      <SubType>Designer</SubType>
    </None>
  </ItemGroup>
  <ItemGroup>
    <Content Include="swap.jpg">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
    <None Include="dlib\DlibDotNet.dll" />
    <None Include="dlib\DlibDotNet.Extensions.dll" />
    <Content Include="DlibDotNet.Native.dll">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
    <Content Include="input.jpg">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
  <Import Project="..\packages\Accord.3.8.2-alpha\build\Accord.targets" Condition="Exists('..\packages\Accord.3.8.2-alpha\build\Accord.targets')" />
  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
    <PropertyGroup>
      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
    </PropertyGroup>
    <Error Condition="!Exists('..\packages\Accord.3.8.2-alpha\build\Accord.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Accord.3.8.2-alpha\build\Accord.targets'))" />
    <Error Condition="!Exists('..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\build\OpenCvSharp3-AnyCPU.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\OpenCvSharp3-AnyCPU.3.3.1.20171117\build\OpenCvSharp3-AnyCPU.props'))" />
  </Target>
</Project>

did you try the steps provided in the link within the error message? — Phiter, Sep 04 '18 at 12:08
According to the error, it seems to be the 144th line in the csproj file. Do you mind checking that? — Nisarg, Sep 04 '18 at 12:08
Well, not 7000 but all that fitted, in fact around 6 hours. Is that enough? — tmighty, Sep 04 '18 at 12:10
You want a "package restore" : https://docs.microsoft.com/en-us/nuget/consume-packages/package-restore — Fildor, Sep 04 '18 at 12:10
And did you get errors during that? Did you restore before or after deleting package.config? — Fildor, Sep 04 '18 at 12:11
The error messages never went away. It always showed the same error message. — tmighty, Sep 04 '18 at 12:12
@Fildor I tried just ANYTHING. I always deleted the unzipped file and started from scratch. — tmighty, Sep 04 '18 at 12:12
Close your IDE. Delete the complete Solution Folder and check out again. Then open in VS and build. VS should auto-restore the packages. — Fildor, Sep 04 '18 at 12:14
@NisargShah I have edited my post and added the line in question. — tmighty, Sep 04 '18 at 12:15
@Liam Yes, I have unzipped that GitHub folder again and started from scratch. The above problem remains. As I said, I've tried just anything already. There seems to be something special about this project / solution. — tmighty, Sep 04 '18 at 12:20
I suspect a bug in VS, and I'm too new to NuGet to explain exactely everything I did. As I said, I've tried really many suggested solutions I found on StackOverflow, but since none of them helped, I guess it's something akward. I was hoping that somebody would perhaps try it for himself. — tmighty, Sep 04 '18 at 12:25
@ershoaib I have added it, but I have not yet figured out how to format it properly. — tmighty, Sep 04 '18 at 12:29

score 7 · Accepted Answer · answered Sep 04 '18 at 12:29

The problem is that the directory structure is

bootcamp_complete.sln
bootcamp_basecamera/
- bootcamp_basecamera.sln
- bootcamp_basecamera/
  - bootcamp_basecamera.csproj

i.e. the .csproj is two levels deep, and there are two .slns. The HintPaths in the .csproj are only ..\package, i.e. they're set up for packages restored by bootcamp_basecamera.sln, not bootcamp_complete.sln.

So I think your options are

open each subproject's own .sln and restore packages there - lots of duplication of the downloaded files, but this may be easier if you only need to work with them individually and they don't depend on each other
modify the .csprojs to set the hintpath to be ..\..\package not ..\package
change the folder structure: remove the intermediate folder with its own .sln file, so bootcamp_basecamera.csproj is in only one folder depth from the root, and then update the top level .sln for the paths change

score 1 · Answer 2 · edited Sep 04 '18 at 12:16

1

There are some ways to install missing packages

You can delete all files in packages folder at solution directory and you can install all nuget packages again by right click the solution name and clicking "Restore Nuget Packages" item
you can simply run Update-Package –reinstall

edited Sep 04 '18 at 12:16

Liam

22,818
25
93
157

answered Sep 04 '18 at 12:13

cimey

175
3
9

When I do #1, it says "All packages already installed. Nothing to restore." – tmighty Sep 04 '18 at 12:17
https://stackoverflow.com/a/35101739/1528378, may be this one helps you, – cimey Sep 04 '18 at 12:26

Where is the NuGet reference stored?

2 Answers2