error in datepicker conrol

hi,
I have a form which has controls (like textbox,checkbox,DatePicker) connected to an ADODB.Recordset using the controls Datasource property. The problem is that if the field(from a table) connected to the datepicker control is empty (i.e. Null) i get an error message
"Unable to Bind to Field or DataMember".
Is there a way around this?

I think this may be caused by having AllowNulls (or similar) set to False for the field in the db. Change it to true and it should solve the problem.