title: How to fix FxCop error code 512?
body: <p>While refactoring, moving around some assemblies around, etc. I compiled a solution in Visual Studio and got back a single error message: "FxCop exited with error code 512".  The build seems fine other than this one error.</p>
  
  <p>Anyone know what this actually means in detail?  Where might I start looking to figure out how to fix it?  Setting FailOnError to false is not a path I want to go down.</p>