title: Nuget.targets not found on first time solution opening
body: <p>When I open a solution for the first time after it has been downloaded from TFS, it (Vs2010) is unable to find the NuGet.targets file.</p>
  
  <p>I've checked TFS and it's marked as downloaded, and it exists on the file system.</p>
  
  <p>If I try to open the solution directly from TFS again, it suddenly works.</p>
  
  <p>I feel this is the reason why my automated builds are also failing.</p>
  
  <p>Has anyone come across this issue before?</p>