title: Cannot embed interop types from assembly "...\Microsoft.Search.Interop.dll" because it is missing the GuidAttribute attribute
body: <p>I get this error when adding a reference to the Microsoft.Search.Interop.dll library in a new project that I created.</p>
  
  <p>Microsoft.Search.Interop.dll is a library that provides some useful API to communicate with Windows Search. I use it in order to add a folder to the system indexer.</p>
  
  <p>Did anybody else get this error, and if so, how should I go about solving it?</p>
  
  <p>I'm using VS2010 RC on a Windows Server 2008 if that is important.</p>