Hello,

I've just finished chapter 7, I've noticed that there are many binding errors displayed in Output window when compiled book's source code is run, Chapter 07\Sample 8 - Polishing (the same errors I see in my code), here are errors for first displayed screen:

System.Windows.Data Error: BindingExpression path error: 'DisplayName' property not found on 'New item placeholder row. Click or type to add a new row.' 'Microsoft.LightSwitch.Presentation.Framework.NewI temPlaceholderDataContext' (HashCode=7958508). BindingExpression: Path='DisplayName' DataItem='New item placeholder row. Click or type to add a new row.' (HashCode=7958508); target element is 'System.Windows.Controls.DataGridCell' (Name=''); target property is 'AutomationProperties.Name' (type 'System.String')..
System.Windows.Data Error: BindingExpression path error: 'Description' property not found on 'New item placeholder row. Click or type to add a new row.' 'Microsoft.LightSwitch.Presentation.Framework.NewI temPlaceholderDataContext' (HashCode=7958508). BindingExpression: Path='Description' DataItem='New item placeholder row. Click or type to add a new row.' (HashCode=7958508); target element is 'System.Windows.Controls.DataGridCell' (Name=''); target property is 'AutomationProperties.Name' (type 'System.String')..
System.Windows.Data Error: BindingExpression path error: 'Active' property not found on 'New item placeholder row. Click or type to add a new row.' 'Microsoft.LightSwitch.Presentation.Framework.NewI temPlaceholderDataContext' (HashCode=7958508). BindingExpression: Path='Active' DataItem='New item placeholder row. Click or type to add a new row.' (HashCode=7958508); target element is 'System.Windows.Controls.DataGridCell' (Name=''); target property is 'AutomationProperties.Name' (type 'System.String')..

Why is this? Is it LightSwitch bug?

Thanks in advance,
Robert