I have tried  using "<tree string="Tree" create="false" delete="false">" but because I am allowing users to edit a row when editing it if the user hits enter to save  it creates a blank row (as seen in the screen capture below) that wont actually create a new record in the database but does create confusion for the end user. Is there anyway to avoid a new row being created when hitting enter in a field that is the last row in the tree view. I thought create="false" would fix the problem but it does not.