We didn't manage to reproduce the issue.
Typemock.Common.TestsRunner.exe is the endpoint of the pipe (See the log devenv-extension) which can't be found.
I'd like to make sure that this process is running by caching it between tests runs.
In order to do that please Open Typemock menu in Visual Studio ->Options->Visual Studio tab, check "Use cached test runner process" and press apply.
Configure windows to create aCrush Dump
Now try to run tests, and make sure that Typemock.Common.TestsRunner.exe is running with "Task Manager"\"Process Explorer".
If the process is down when you're trying to run the tests, check if there is a crush dump record of this and send it to us.