Visual Studio 2010 deployment: Error occurred in deployment step 'Activate Features': Feature with Id '320ed40e-cf38-493b-9bc3-7fd3b01e8524' is not installed in this farm, and cannot be added to this scope.

If you get this error while deploying from Visual  Studio 2010, the chances are you have a multiple-servers farm, and Visual Studio can only deploy the solution to its local server.