When I rebuild the solution I get
Error 78 Error 3007: Problem in mapping fragments starting at lines 10117, 10336:Column(s) ProductID are being mapped in both fragments to different conceptual side properties.
C:\projects\mvccms\MvcCms 2.0\MvcCms.Data\MvcCmsDataModel.edmx 10337 10341 MvcCms.Data

My dev environment:
Visual Studio 2010 Ultimate
SQL Server 2008 Enterprise
IIS 7
All development done on Windows 7 Ultimate box

I ran the SQL Full Script and haven't changed the portal information. Running from the dev env.