Using Microsoft.Analytics.UnitTest.dll throws FileLoadException

Hello,

I am using VS2017 and trying to write unit tests using the Microsoft.Analytics.UnitTest.dll assembly to test a custom USQL extractor.

When I run my tests I get the following error:
```
System.IO.FileLoadException occurred
HResult=0x80131045
Message=Could not load file or assembly 'Microsoft.Analytics.UnitTest, Version=10.2.0.0, Culture=neutral, PublicKeyToken=f300afd708cefcd3' or one of its dependencies. Strong name signature could not be verified. The assembly may have been tampered with, or it was delay signed but not fully signed with the correct private key. (Exception from HRESULT: 0x80131045)
```

Any help here would be appreciated.

Thanks!