Adding protobuf-enyim to a new VS2012 project results in 'Could not load file or assembly'.

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Steps to reproduce:

 - using VS2012 Pro Update 2
 - create a new 4.5 library project
 - add the following NuGet libraries: NUnit 2.6.2, protobuf-net.Enyim 1.0
 - create the following test:

using Enyim.Caching.Memcached;
using NUnit.Framework;
using ProtoBuf.Caching.Enyim;

namespace ClassLibrary1
{
    [TestFixture]
    public class Class1
    {
        [Test]
        public void Test()
        {
            ITranscoder transcoder = new NetTranscoder();
            transcoder.Serialize(new object());
        }
    }
}

Execute the test (Resharper/NUnit GUI/NUnit console - all give the same 
result), which fails with:

System.IO.FileLoadException : Could not load file or assembly 'protobuf-net, 
Version=2.0.0.602, Culture=neutral, PublicKeyToken=257b51d87d2e4d67' or one of 
its dependencies. The located assembly's manifest definition does not match the 
assembly reference. (Exception from HRESULT: 0x80131040)

Expected result: test completes successfully.

Original issue reported on code.google.com by skolima on 17 May 2013 at 5:03