Entity-framework – Visual Studio 2008 SP1 “Package Load Failure” Error

entity-frameworkvisual-studio-2008

I recently installed VS08 SP1 so that I could use the Entity Framework. However, upon loading projects with edmx files, I get a "Package Load Failure" error that points at "Microsoft.Data.Entity.Design.Package".

Unfortunately, googling this turn up only problems dealing with installing SP1 over the Entity Framework CTP, which I have never installed.

Here's what I've tried:

  • Uninstalling, reinstalling SP1, and restarting many times.
  • Using the Visual Studio 2008 Service Pack Preparation Tool both before and after installing SP1.
  • Used the "Package Load Analyzer" from the Visual Studio SDK. The tests pass, but following the test the previously mentioned error displays.

Edit: Okay I ran VS with logging on and I see the error 

Field not found: 'Microsoft.VisualStudio.Modeling.Shell.CommonModelingCommands.PrintPreview'.
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