Description

A test with a DeploymentItem attribute does not work.

Steps to reproduce

1. Add a "DeploymentItem" on a test method with a resource file to deploy.
2. Run the test.

Expected behavior

The test should drop all the binaries to the deployment directory and run tests.

Actual behavior

The tests do not run with the following message in the "Tests" tab:

An exception occurred while invoking executor 'executor://mstestadapter/v2': Could not load file or assembly 'Microsoft.VisualStudio.TestPlatform.TestFramework.Extensions, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

Environment

VS IDE. Works fine from commandline.
MSTest.TestFramework 1.1.11
MSTest.TestAdapter 1.1.12