Update model from database and generate model from database causes "Object reference not set to an instance of an object"

I have recently experienced that I suddenly could not update my model from database, or generate a new model with the Entity Framework designer.

The generate dialog would simply not appear. So I created an empty model instead, and tried to update from database, and I got the error: ""Object reference not set to an instance of an object".

After reinstalling Visual Studio and SP1 without luck, I found the solution:

  1. 1) Open the "Visual Studio 2008 Command Prompt" (with administrator privileges if Vista)
  2. 2) devenv /resetskippkgs
  3. 3) Close Visual Studio
  4. 4) devenv /setup
  5. 5) Run Visual Studio

It forces Visual Studio to merge the resource metadata that describes menus, toolbars, and command groups from all VSPackages available, and I was up and running again.

Posted August 27, 2008 by Joachim Lykke Andersen
In Entity Framework

Comments [1]   
Wednesday, May 20, 2009 7:06:50 PM (Romance Standard Time, UTC+01:00)
Hi Friends, i am new here and .
I am from Canada.
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With best wishes :D, Honey.
Honey
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