Missing dependency on System.Reactive.Linq?

Hi, I’ve created a console project in VS 2017 and added the echo.process 2.0.27-beta nuget package. The code below throws:

System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Reactive.Linq, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263' 

because it cannot load the assembly System.Reactive.Linq

using Echo;
using System.Data;
using static Echo.Process;

namespace ep_datatable_bug
{
    class Program
    {
        static void Main(string[] args)
        {
            ProcessConfig.initialise();
        }
    }
}

[StefanBertels]

Hi, I had another RX-related issue with same error message and could solve it. I add this as a comment here if others search for help…

My setup: I use System.Reactive 4.0.0 (which is current stable) and Echo.Process (current 2.0.41-beta) in my project. Echo.Process references to old System.Reactive.Linq (i.e. Reactive 3.x).

Solution: I added <PackageReference Include="System.Reactive.Compatibility" Version="4.0.0" /> to my csproj and got rid of the error.

This is due to a change made by the RX team (moving to a single System.Reactive.dll) in v4. Details see here: https://github.com/dotnet/reactive#v40-changes

Maybe @louthy could update Echo.Process eventually to System.Reactive 4.0.0…

[louthy]

@EmilAlipiev I haven’t seen this issue on 4. I would make sure you don’t have some projects with an old version of echo, or some projects with an old version of Rx. If other libraries refer to an old Rx then you will need to create an assemblyBinding so they all use the same version.

Your example project doesn’t appear to refer to echo at all.