Hi,

I am trying to get into using SilverLight and am looking into using the CSLA.NET for SilverLight stuff. When I open and try to build one of the sample applications that comes with it I get these errors:

Error 1 The type 'System.Collections.ObjectModel.ObservableCollection`1' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Windows, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'. C:\Documents and Settings\frank\My Documents\Visual Studio 2008\Projects\csla\CslaLight\cs\InventoryDemo\InvDal\WarehouseList.cs 11 33 InvDal

Error 2 The type 'System.ComponentModel.IEditableObject' is defined in an assembly that is not referenced. You must add a reference to assembly 'System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'. C:\Documents and Settings\frank\My Documents\Visual Studio 2008\Projects\csla\CslaLight\cs\InventoryDemo\InvDal\ProductEdit.cs 13 31 InvDal

Error 3 The type 'System.ComponentModel.INotifyPropertyChanged' is defined in an assembly that is not referenced. You must add a reference to assembly 'System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'. C:\Documents and Settings\frank\My Documents\Visual Studio 2008\Projects\csla\CslaLight\cs\InventoryDemo\InvDal\ProductDetail.cs 13 33 InvDal

I have tried to find System.Windows.dll and System.dll without luck.

I have double checked that everything is installed. Can anybody provide me with some ideas as to what could be causing this problem, please?

Thanks