I am having a similar problem but when I remove the Path=Data from the data context, the data doesn't initialize my fields.
< Grid x:Name="grdDates" DataContext="{Binding Source={StaticResource PQIProviderDetailAccess}}" >
<
basics:DatePicker Text="{Binding Path=CreateDate, Mode=TwoWay}" Grid.Row="2" Grid.Column="1" />
<
Button x:Name="SaveButton" Content="Save Dates" Width="100"
Grid.Row="22" Grid.Column="0" Grid.ColumnSpan="2"
csla:InvokeMethod.TriggerEvent="Click"
csla:InvokeMethod.MethodName="Save"/>
Copyright (c) Marimer LLC