C# 6.0 project in Visual Studio 2015 using NCrunch 2.11.0.12

I've got two projects. One is the product, the other is the unit tests. I have one unit test as follows:

using FluentAssertions;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace UnitTests
{
[TestClass]
public class LineContinuationTests
{
[TestMethod]
public void OrderedListRegExTests()
{
var test = "1";
test.Should().Be("1");
}
}
}

I've used NCrunch quite a bit on other projects so I'm familiar with some of the pitfalls. Tried the usual turn-off parallel execution and copy references stuff.

The test gets queued and appears to be running but never completes. Thoughts?

P.S. This is a small open source project so I can provide the git repo if needed.

Here's the repo

https://github.com/mike-ward/Markdown-Edit.git

Use the V1.3 branch.

Thanks for looking into this.

Changing just the test project to 4.5.3 worked. Thanks.