Assembly conflict upgrading to ASP.net MVC 4 RTM

Question

I have just upgraded my project from ASP.net MVC 4 RC to RTM, but I am now getting this error:

Error 45 Assembly 'StudioMvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' uses 'System.Net.Http.Formatting, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' d:\projects\StudioPlatform\StudioMvc\StudioMvc\bin\StudioMvc.dll StudioMvc.WebApi.Tests

The reference in the .csproj file is:

<Reference Include="System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>..\packages\Microsoft.AspNet.WebApi.Client.4.1.0-alpha-120809\lib\net40\System.Net.Http.Formatting.dll</HintPath>
</Reference>

I have tried altering the version there to 4.1.0.0 but to no avail (the same error message). Any idea what I should do next?

@bUKaneer: Sorry, but as far as I can tell that appears to be a different problem. — Grokys
Where can I find standalone installer of asp.net mvc-4 rtm to be installed on server? — Muhammad Adeel Zahid

Paul Paul · Accepted Answer · 2012-08-17T16:17:51

Try updating to:

<Reference Include="System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.AspNet.WebApi.Client.4.0.20505.0\lib\net40\System.Net.Http.Formatting.dll</HintPath>
</Reference>

If that does not work, reinstall Web API from NuGet.

Assembly conflict upgrading to ASP.net MVC 4 RTM

1 Answers