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  9. Could not load ... 'System.Runtime.CompilerServices.Unsafe, Version 4.0.4.1

Could not load ... 'System.Runtime.CompilerServices.Unsafe, Version 4.0.4.1

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18 Jul 2024 15:18 #12964 by support
Replied by support on topic Could not load ... 'System.Runtime.CompilerServices.Unsafe, Version 4.0.4.1
Hello.
I assume you meant OPC Studio 2024.1 and not 2014.1.

I am not sure about packages.config. When PackageReference is used, all that you need are the references to OpcLabs.QuickOpc packages, and not the transitive dependencies. Also with PackageReference, the assembly you mentioned should not normally appear in assembly references either - and when it is there, you are calling for a problem by referencing an improper version.

Try to streamline the project by removing the unnecessary references.

If that does not help, you can strip the project off most of your code, just leave the skeleton that shows the problem, and post it here and we will investigate.
But in VS2022, not in VS2017, we no longer support it.

Regards

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17 Jul 2024 20:37 #12962 by tlaford
Could not load ... 'System.Runtime.CompilerServices.Unsafe, Version 4.0.4.1 was created by tlaford
I recently upgraded my Visual Studio 2017 project to OPC Studio 2014.1.

When I open my GUI editor it says "Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified."

If I click on Ignore and Continue it removed the OpcLabs.EasyOpc.DataAccess.EasyDAClient from the GUI Designer.

I have 'System.Runtime.CompilerServices.Unsafe, Version=6.0.0.0' installed as a Reference for my project.

packages.config includes this line:
<package id="System.Runtime.CompilerServices.Unsafe" version="6.0.0" targetFramework="net472" />

app.config includes this block:
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

How do I get rid of this error?

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  9. Could not load ... 'System.Runtime.CompilerServices.Unsafe, Version 4.0.4.1
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