I added a custom namespace to my wiki via LocalSettings.php, including adding this line:
    $smwgNamespacesWithSemanticLinks[] = NS_INCIDENTS;
My properties seem to display ok on pages in this namespace, but when I click Browse properties in the toolbar, it tells me that the page has no properties.  What do I need to do to get SMW to recognize that I have properties on pages in my custom namespace?

For instance (though I don't think non-logged-in users can click on Browse properties):