Can't install. Getting Error

Tried to user connection strings for a existing DB, and than I tried making a new DB and I still get this error.


Setup failed: System.InvalidOperationException: Sequence contains more than one element at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source) at System.Data.Objects.ELinq.ObjectQueryProvider.<GetElementFunction>b__3[TResult](IEnumerable`1 sequence) at System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot) at System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression) at System.Data.Entity.Internal.Linq.DbQueryProvider.Execute[TResult](Expression expression) at System.Linq.Queryable.Single[TSource](IQueryable`1 source) at Nop.Services.Installation.InstallationService.InstallSettings() in F:\Own\NopCommerce\Sources\src\Libraries\Nop.Services\Installation\InstallationService.cs:line 4497 at Nop.Services.Installation.InstallationService.InstallData(String defaultUserEmail, String defaultUserPassword, Boolean installSampleData) in F:\Own\NopCommerce\Sources\src\Libraries\Nop.Services\Installation\InstallationService.cs:line 9057 at Nop.Web.Controllers.InstallController.Index(InstallModel model) in F:\Own\NopCommerce\Sources\src\Presentation\Nop.Web\Controllers\InstallController.cs:line 378

https://www.nopcommerce.com/boards/t/10620/200-beta-install-error-new-rev-existing-db.aspx

Still getting this error.  I don't have a settings file until the installer is ran.  but even then if I copy it and change the script it doesn't work.  I have installed per the Web Matrix web installer.  But afterwards I just have a blank db.  How do I make my old db work with the new 2.0 upgrade?