title: I am getting an output message when opening .net 4.0 solution file in VS 2010
body: <p>I am using Visual Studio 2010 sp1</p>
  
  <p>When I am opening .NET 4.0 application in VS 2010, I am getting an Output message as </p>
  
  <p><strong>Loading F:\Projects..\Project.csproj ...
  F:\Projects..\Project.csproj : error  : The project file 'F:\Projects..\Project.csproj' cannot be opened.
  The project type is not supported by this installation.</strong></p>
  
  <p>But I am able to open other projects in the application. They are loaded properly.</p>
  
  <p>Provide me a solution for how to open. Thanks.</p>