it sounds like the catalog pages are being created over the admin pages.
when you run the wizard using the admin preset, go to the manage pages tab, and ensure that the pages are being created as:
Search > admin/admin_search.php
Results > admin/admin_results.php
Detail > admin/admin_detail.php
Insert > admin/admin_insert.php
Update > admin/admin_update.php
See the Create Your Product Admin section, Step 9.
When creating the pages using the catalog preset, ensure the pages are created as:
Search > products_search.php
Results > products_results.php
Detail > products_detail.php
See the Create Your Product Catalog section, Step 7