I inserted the shortcode [rental_listing] on my listings page and the page displays the listings, but preceded by:
Warning: Illegal string offset 'development' in /home/content/p3nexnas03/90/2060890/html/wp-content/plugins/sp-rental-manager/user/shortcodes.php on line 150
The listing also displays the street address twice.
Adding a development and associating the listing to the development didn't solve the problem.