I recently installed Umbraco 5 RC1 along with the default Books starter kit.  The installation went fine and I was able to preview the site as well.  However, when I went to the administration page ("dashboard"?) to edit the description of the content, I got the following server error:

Value cannot be null or empty.
Parameter name: viewName

Stack Trace:

[ArgumentException: Value cannot be null or empty.
Parameter name: viewName]
   System.Web.Mvc.ViewEngineCollection.FindView(ControllerContext controllerContext, String viewName, String masterName) +625655
   Umbraco.Cms.Web.Mvc.Controllers.UmbracoController.Index(IUmbracoRenderModel model) +1079
   lambda_method(Closure , ControllerBase , Object[] ) +117
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +264
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +39
   System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +129
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +826410
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +314
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +825632
   System.Web.Mvc.Controller.ExecuteCore() +159
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +335
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +62
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +20
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +54
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +469
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +375

This occurred after the content was saved/published and then previewed.  The error also occurs if I hit the URL directly.

This is on my local dev machine and it's running ASP.NET 4.0, Windows 7, and IIS 7.

Any thoughts would be appreciated.

Thanks!

David