Error when opening .EDMX file RRS feed

  • Question

  • I get the error when opening my model (.edmx) which used to work I don't know what caused this.

    'The custom tool 'EntityModelCodeGenerator' failed. Could not load file or assembly 'Microsoft.Data.Tools.VSXmlDesignerBase, Version =, Culture = neutral, ..... The system cannot find the file specified'

    Like I said, my model used to work and open without issues. Now when i double-click it, it opens the XML format of the model and not the GUI. Anyone know the solution to this issue? I've tried re-installing VS2010 a couple of times. Did a repair as well. I re-installed EF 4.1 but didnt help.

    I have VS2010 with a webforms project running .NET 4.0.

    Thanks in advance

    Thursday, November 1, 2012 9:12 PM

All replies

  • Hi ankie320,

    Welcome to MSDN Forum.

    Have you install or update any component of your VS?

    Best Regards

    Allen Li [MSFT]
    MSDN Community Support | Feedback to us

    Monday, November 5, 2012 5:25 AM