I ahve installed Leblender and happily created a second widget for use in a grid, the widget is a 4 text boxes that will display data

I have specified a render file but for some reason i get an error on the out out

System.Configuration.ConfigurationErrorsException: An error occurred creating the configuration section handler for system.web.webPages.razor/host: Could not load file or assembly 'System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) (C:\work\gpe\website\app_plugins\leblender\web.config line 5) ---> System.IO.FileLoadException: Could not load file or assembly 'System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
   at System.Configuration.TypeUtil.GetTypeWithReflectionPermission(IInternalConfigHost host, String typeString, Boolean throwOnError)
   at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.Init(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord)
   at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.InitWithRestrictedPermissions(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord)
   at System.Configuration.RuntimeConfigurationRecord.CreateSectionFactory(FactoryRecord factoryRecord)
   at System.Configuration.BaseConfigurationRecord.FindAndEnsureFactoryRecord(String configKey, Boolean& isRootDeclaredHere)
   --- End of inner exception stack trace ---
   at System.Configuration.BaseConfigurationRecord.FindAndEnsureFactoryRecord(String configKey, Boolean& isRootDeclaredHere)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)
   at System.Web.Configuration.WebConfigurationManager.GetSection(String sectionName, String path)
   at System.Web.WebPages.Razor.WebRazorHostFactory.GetRazorSection(String virtualPath)
   at System.Web.WebPages.Razor.WebRazorHostFactory.CreateHostFromConfig(String virtualPath, String physicalPath)
   at System.Web.WebPages.Razor.RazorBuildProvider.GetHostFromConfig()
   at System.Web.WebPages.Razor.RazorBuildProvider.CreateHost()
   at System.Web.WebPages.Razor.RazorBuildProvider.EnsureGeneratedCode()
   at System.Web.WebPages.Razor.RazorBuildProvider.get_CodeCompilerType()
   at System.Web.Compilation.BuildProvider.GetCompilerTypeFromBuildProvider(BuildProvider buildProvider)
   at System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders()
   at System.Web.Compilation.BuildProvidersCompiler.PerformBuild()
   at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
   at System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound)
   at System.Web.Compilation.BuildManager.GetCompiledType(VirtualPath virtualPath)
   at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
   at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionaryviewData)
   at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute() in c:\work\gpe\website\Views\Partials\Grid\Editors\Base.cshtml:line 20

Here;s the back office:

and here's the code to display

@inherits UmbracoViewPage<Lecoati.LeBlender.Extension.Models.LeBlenderModel>


@foreach (var item in Model.Items)
{

<div class="stats-box stats-box--single">

    <p class="stat-figure">@item.GetValue("statisticOne")</p>
    <p class="stat-type">@item.GetValue("statisticOneType")</p>

    <p class="stat-figure">@item.GetValue("statisticTwo")</p>
    <p class="stat-type">@item.GetValue("statisticTwoType")</p>
</div>
}

I've tried the viewstart thing, but what intrigues me is that I have another widget pointing to the right thing okay??

any ideas would be appreciated Ravi