This question is relevant if you get a window that looks like figure 5.1.
: Window asking which view to use in expansion
This will only happen when you expand an item for the first time in a view (such as `folder') which is defined to allow items to be expanded in different ways. Simply fill in `empty: item' with the name of the GPD you wish to use and re-expand the item. The GPD you just indicated will then be used to create the view.