An exception occurred while invoking executor 'executor://mstestadapter/v1': Object reference not set to an instance of an object

Question

We are using Visual Studio 2012 and Team Foundation Server 2010 in our project. Since, we are using Microsoft Fakes, we could have not used the started Test functionality of

Answer 1

This is what worked for me: In Visual Studio, Test -> Test Settings -> Default Processor Architecture -> X64.

Though it might not solve everyone's issue, hope it helps some of you out there.