title: What is the purpose of Instrument assemblies in place in VS2010?
body: <p>In visual studio 2010 under the test settings &lt; data and diagnostics tab &lt; configuration for Code Coverage you can choose whether to instrument assemblies in place when you select which assemblies you wish to apply code coverage analysis to.</p>
  
  <p>By default instrument assemblies in place is checked, however when it is checked anytime I run my unit tests I will be told there is no code coverage xml file being generated. If I choose to <strong>not</strong> instrument assemblies in place it works fine.</p>
  
  <p>What gives?</p>