Can not create open silverlight 2 projects "Object reference not set to a instance of an object"

If you install Visual Studio 2008 Service Pack or .NET 3.5 Service Pack, then the Silverlight Projects may not be working properly.

If you install Visual Studio 2008 Service Pack or .NET 3.5 Service Pack, then the Silverlight Projects may not be working properly.

Problems:
When you create a new silverlight project you get a message "Object reference not set to a instance of an object"
When you try to load existing project it tells that visual studio can not open this type of project.

Solution:

1. Open the command prompt and go to the folder
   C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE
2. type devenv /resetskippkgs
3. close the Visual Studio Window that will open after completion of previous command.
4. type devenv /setup
5. After the execution of previous command is complete open Visual Studio.