On a sandbox test site, upgraded to test the new 3.9 beta / release candidate version - now getting the following error:
Warning: mysql_query() expects parameter 2 to be resource, object given in /var/www/wordpress/wp-content/plugins/wordpress-form-manager/db.php on line 27 Warning: mysql_num_rows() expects parameter 1 to be resource, null given in /var/www/wordpress/wp-content/plugins/wordpress-form-manager/db.php on line 27
Apparently, the database handle is not being passed in via public $conn;
Perhaps is is a bad idea to access the database directly, instead of going through the WP API.
I am running multi-site, error occurs whether the plugin is network activate or just activated on one site.
It will likely be Monday before I can look at the code, but I will try to find a fix.