Two issues:

1) To rebuild the SF source I had to add a reference to Microsoft.SQLerver.Management.SDK.sfc. Why, and any issue there?

2) ...and this is the big one because I cant work now. I rebuilt all my BO partial classes via mapper. I still get the folowing errors when trying to compile that I cannot get past.

a) _ComponentType is not declared

b) Argument not specified for parameter 'propertyType' of Public Sub New(fieldname as String, propertyType as System.Type)