The results page should be created before running the DataAssist search wizard.
You Create a recordset on the page, then you create the recordset display with a repeat region around it.
The DataAssist Search behavior creates the where clause for the recordset dynamically, based on the search criteria.
The simplest way to create the search and results page is to run the DataAssist Wizard, on the first step, you can set it to create only the search and results page rather than create all of them.