I've modified 2.5 with the changes that I've made in 2.4, I've also copied over the 2 .txt files that were in my App_Data project.  But I get a error when trying to run my 2.5 project.


Server Error in '/' Application.
--------------------------------------------------------------------------------

'Guests' role could not be loaded 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: Nop.Core.NopException: 'Guests' role could not be loaded

Source Error: 


Line 383:            var guestRole = GetCustomerRoleBySystemName(SystemCustomerRoleNames.Guests);
Line 384:            if (guestRole == null)
Line 385:                throw new NopException("'Guests' role could not be loaded");
Line 386:            customer.CustomerRoles.Add(guestRole);
Line 387:
 

Source File: C:\Visual Studio 2010\Projects\nopCommerce 2.5\Libraries\Nop.Services\Customers\CustomerService.cs    Line: 385 

Stack Trace: 


[NopException: 'Guests' role could not be loaded]
   Nop.Services.Customers.CustomerService.InsertGuestCustomer() in C:\Visual Studio 2010\Projects\nopCommerce 2.5\Libraries\Nop.Services\Customers\CustomerService.cs:385
   Nop.Web.Framework.WebWorkContext.GetCurrentCustomer() in C:\Visual Studio 2010\Projects\nopCommerce 2.5\Presentation\Nop.Web.Framework\WebWorkContext.cs:117
   Nop.Web.Framework.WebWorkContext.get_CurrentCustomer() in C:\Visual Studio 2010\Projects\nopCommerce 2.5\Presentation\Nop.Web.Framework\WebWorkContext.cs:185
   Nop.Web.MvcApplication.SetWorkingCulture() in C:\Visual Studio 2010\Projects\nopCommerce 2.5\Presentation\Nop.Web\Global.asax.cs:201
   Nop.Web.MvcApplication.Application_AuthenticateRequest(Object sender, EventArgs e) in C:\Visual Studio 2010\Projects\nopCommerce 2.5\Presentation\Nop.Web\Global.asax.cs:146
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +148
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

 


--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272