I am getting this error with my component. Is this a problem?

17:29:52,296 ERROR [DebugUtils] javax.faces.FacesException: Could not get property serializableDataModel of component f1:items

Where f1 is a form tag and items refers to a @DataModel property:

@Name("bo.sale.editor")
@Stateful
@LoggedIn
public class SaleEditor implements ISaleEditor{

 public Sale sale;

 @DataModel
 private List<Item> items;

 @DataModelSelection
 private Item item;

 </snip>

I'm using:
Seam - CVS 5/25/2006
MyFaces - 1.1.2
Jboss - 404GA

Thanks,
Chris....