Problem Loading Package

I am trying to load the NUnit Test Code Conversion extension written by James Newkirk (http://blogs.msdn.com/jamesnewkirk/default.aspx). I realize that it seems that I should be talking to him to troubleshoot this, but I don't think its a problem with his package.

The reason I think this is because the exception being returned is that an assembly couldn't be found "Microsoft.Practices.RecipeFramework.Library". This leads me to believe that the GAT wasn't installed correctly, but I can't tell if it has been or not.

Any help would be greatly appreciated.

Here is the error in full:

System.TypeLoadException: Microsoft.Practices.RecipeFramework.Library.Actions.CreateUnboundReferenceAction, Microsoft.Practices.RecipeFramework.Library ---> System.IO.FileNotFoundException: Couldn't find assembly Microsoft.Practices.RecipeFramework.Library.
   at Microsoft.Practices.Common.Services.TypeResolutionService.GetAssembly(AssemblyName assemblyName, Boolean throwOnError)
   at Microsoft.Practices.Common.Services.TypeResolutionService.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)
   --- End of inner exception stack trace ---
   at Microsoft.Practices.Common.Services.TypeResolutionService.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)
   at Microsoft.Practices.Common.Services.TypeResolutionService.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)
   at Microsoft.Practices.Common.Services.AliasResolutionService.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)
   at Microsoft.Practices.Common.Services.TypeResolutionService.GetType(String typeName, Boolean throwOnError)
   at Microsoft.Practices.RecipeFramework.Recipe.GetInstance[T](ITypeResolutionService resolution, String concreteType)
   at Microsoft.Practices.RecipeFramework.Recipe.LoadActionsFromConfiguration(ITypeResolutionService resolution)
   at Microsoft.Practices.RecipeFramework.Recipe.ExecuteActions(IDictionaryService readOnlyArguments, IDictionaryService arguments, ITypeResolutionService resolution)
   at Microsoft.Practices.RecipeFramework.Recipe.Execute(Boolean allowSuspend)
   at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(String recipe, IAssetReference reference, IDictionary arguments)
   at Microsoft.Practices.RecipeFramework.RecipeManager.Add(IComponent component, String name)
   at System.ComponentModel.Container.Add(IComponent component)
   at Microsoft.Practices.RecipeFramework.RecipeManager.EnablePackage(XmlReader configuration)
   at Microsoft.Practices.RecipeFramework.RecipeManager.EnablePackage(String packageName)
   at Microsoft.Practices.RecipeFramework.PackageManagement.EnableDisablePackages.OnOkClick(Object sender, EventArgs e)