显然，这是一个问题的.NET Framework 4.5的Windows 7 64位SP1上运行。当我改变目标框架的.NET Framework 4.5.1，这个问题解决了。我无法解释为什么发生这种情况，但至少有一个解决方法吧。

Apparently this is an issue with .NET Framework 4.5 running on Windows 7 x64 SP1. When I change the target framework to .NET Framework 4.5.1, this issue is resolved. I can't explain why this is happening, but at least there is a work-around for it.

- 编辑 -

我刚刚发现变化框架4.5.1版是不是解决了问题。当我做了改变，Visual Studio会自动添加在的csproj下面的每个属性组：

I just discovered that the change to framework version 4.5.1 isn't what resolved the issue. When I made that change, Visual Studio automatically added the following to each property group in the csproj:

<Prefer32Bit>false</Prefer32Bit>

添加此行到每个配置后，这个问题就解决了​​。我仍然在寻找一个解释，为什么这解决了问题，这样我就可以了解如何避免它在未来。

After adding this line to each configuration, this issue was resolved. I'm still looking for an explanation as to WHY this fixes the issue, so I can understand how to avoid it in the future.