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.

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.
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