I loaded a second copy of nopcommerce in a 2nd folder to start a new projecy - once the basic info had been completed and the application had been built, i returned to my initial project only to find that the databse had become detached. i have tried to link it back, but i keep getting this message - can anyone help!!!

Server Error in '/' Application.
Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Could not load type 'NopSolutions.NopCommerce.Web.MasterPages.root'.

Source Error:

Line 1:  <%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Root.Master.cs" Inherits="NopSolutions.NopCommerce.Web.MasterPages.root" %>
Line 2:  
Line 3:  <%@ Register TagPrefix="nopCommerce" TagName="Header" Src="~/Modules/Header.ascx" %>


Source File: /MasterPages/Root.master    Line: 1

Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927