[Navisworks Manage 2024 CommandHandlerPlugin] Could not load file or assembly 'System.Text.Json'

[StellarVoyager]

Hello,

I'm trying to develop a CommandHandlerPlugin for Navisworks Manage 2024.

using System;
using System.Windows;
using Autodesk.Navisworks.Api.Plugins;
using Azure.Identity;

namespace NavisworksPlugin
{
  [Plugin("NavisworksPlugin", "me")]
  [RibbonLayout("RibbonLayout.xaml")]
  [RibbonTab("RibbonTab")]
  [Command("Button")]
  public class Program : CommandHandlerPlugin
  {
    public override int ExecuteCommand(string name, params string[] parameters)
    {
       try
         {
            _ = new InteractiveBrowserCredential();
          }
       catch (Exception ex)
       {
          _ = MessageBox.Show(ex.Message);
       }
       return 0;
    }
  }
}

So I've created a .NET 4.8 Class Library but I get this error at runtime:

System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Text.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.'

I tried to add it manually in the App.config but didn't change anything:

<dependentAssembly>
    <assemblyIdentity name="System.Text.Json" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-6.0.0.10" newVersion="6.0.0.10" />
</dependentAssembly>

Build is deployed there : 
- C:\Program Files\Autodesk\Navisworks Manage 2024\Plugins\NavisworksPlugin\*

- C:\Program Files\Autodesk\Navisworks Manage 2024\Dependencies\*

I can see System.Text.Json 6.0.10 is a transitive package from Azure.Identity but I don't understand why it is the version 6.0.0.0 that is required at runtime (when it is indeed version 6.0.10 required).
I tried to override installation using 6.0.10 and the error went away (with strong warnings) but then I have a new error of another package System.Memory that require an unavailable version from NuGet. 

How to manage package depedencies?

Thanks,

[naveen.kumar.t]

Hi @StellarVoyager ,

I don't see anywhere that either System.Text.Json or Azure.Identity are part of any NW bin directory or any other standard directory that might be in the PATH

[StellarVoyager]

Hi @naveen.kumar.t,

Thank you for taking the time to respond.

I'm not sure what this implies?

I installed Azure.Identity 1.13.2 from the NuGet package manager and it installs System.Text.Json 6.0.10 transitively.After the build I have my DLLs output: Azure.Identity.dll (v1.13.2.0, msil, .NETStandard v2.0) & System.Text.Json (6.0.0.10, msil, .Net Framework v.4.6.1).

Erratum: I mistranslated the error message. It's not that it can't find the assembly, it's that it's not at the expected version (expected: 6.0.0, actual: 6.0.10):

"The located assembly's manifest definition does not match the assembly reference."

[naveen.kumar.t · Accepted solution]

Hi @StellarVoyager ,

Where is the package installed?
Where is the application loading System.Text.Json 6.0.10 from?

You may need to use "Process Monitor" to determine where the DLL is being loaded from.

By default, in .NET, if a DLL references another DLL located in the same directory, it does not automatically attempt to load that DLL.

If you need to ensure that the dependent DLL is loaded from their directory, you should use the AssemblyResolve event: AppDomain.AssemblyResolve Event 
Alternatively, you can explicitly load the DLL before execution.