DLL issue with MSpec ReSharper plugin

I am trying to get the MSpec plugin to work with ReSharper 5.1 running Visual Studio Premium 2010.

I have followed the install procedure and copied the Machine.Specification.dll and Machine.Specifications.ReSharperRunner.5.1.dll and the associated PDB files to the ReSharper plugins folder.

When Visual Studio starts I get this error mes开发者_如何转开发sage:

How do I resolve this? All the required DLL files are there. The DLL files are not on a network location.

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Please open the MSpec DLLs' properties in Explorer and click the "unblock" button on the first tab page. You need to do this for both Machine.Specifications.dll and Machine.Specifications.ReSharperRunner.x.y.dll.