Could not load file or assembly System.Numeric.Vectors in ML.NET

Question

I created a new console application .net46, install the latest ML and tried a simple LDA. Got the error above. None of the fix that I found on the web seems to work. It is looking for a 4.1.3.0 version of the System.Numerics.Vectors that does not exist.

Have you tried adding the "System.Numerics.Vectors" NuGet package? — Jon, Apr 20 '20 at 14:20

score 17 · Answer 1 · edited Mar 20 '21 at 13:23

17

There is a problem that MSBuild requires version 4.1.3.0 but downloads 4.1.4.0 . You should add

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
        <assemblyIdentity name="System.Numerics.Vectors" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.1.3.0" newVersion="4.1.4.0" />
    </dependentAssembly>
</assemblyBinding>

to MSBuild.exe.config . It usually located at C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin

I found this bug at Visual Studio 16.8.2 and 16.8.3 .

edited Mar 20 '21 at 13:23

Vy Do

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answered Dec 10 '20 at 08:28

Daniil Zemchenkov

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1

Still exists in 16.8.4, Thanks for sharing – prem Feb 10 '21 at 11:16
1

Still exists in 16.9.0 – Dudu Mar 06 '21 at 11:58
1

Still exist in Microsoft Visual Studio Community 2019 Version 16.9.2 (March 20th, 2021) – Vy Do Mar 20 '21 at 13:25
`E:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin` – Vy Do Mar 20 '21 at 15:45
2

In case you have an indirect dependency to System.Numerics.Vectors, you may have to add the above to App.config of your executable project. – andersand Dec 29 '21 at 12:30

score 0 · Answer 2 · answered May 14 '20 at 01:47

0

I think this may be related to this GitHub issue: https://github.com/dotnet/runtime/issues/26370

I think either trying to install the System.Numerics.Vector package as Jon suggested, or maybe update to net472 or .NET Standard 2.0 may help.

answered May 14 '20 at 01:47

Alex S

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score 0 · Answer 3 · answered Jul 06 '23 at 12:23

I got the error in VS 2019 Community Version 16.11.27

could not load file or assembly 'system.numerics.vectors, version=4.1.4.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a' or one of its dependencies. the located assembly's manifest definition does not match the assembly reference. (exception from hresult: 0x80131040)

The projects used to load fine before. Not sure how the issue suddenly came.

Uninstalling and re-installing the same Visual studio version worked for me

Could not load file or assembly System.Numeric.Vectors in ML.NET

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