Unit Test Runner failed to run tests - CodedUITestFramework


I'm trying to upgrade a solution from VS2010 to VS2013.

I have ReSharper 8.0.2 (8.0.2000.2660) C# edition.  In VS2010 both NUnit unit tests and Spec Flows run just fine.

If I open using VS2013, rebuild, attempt to run tests NUnit unit tests work fine but Spec Flows generate the message:

Unit Test Runner failed to run tests


Trying to load "Microsoft.VisualStudio.QualityTools.CodedUITestFramework"  Version=, etc...

The file exists and the reference in the project is correct.

Any ideas?

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Hi Mark,

error message looks very strange provided you use NUnit behind the scenes, because it clearly refers to MSTest. Could you please create sample solution to reproduce this problem?


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