Jquery not functioning

When I try to customize Parabola, the Parabola Settings page mentions:

Checking jQuery functionality…
If this message remains visible after the page has loaded then there is a problem with your WordPress jQuery library. This can have several causes, including incompatible plugins. The Parabola Settings page cannot function without jQuery.

I removed all plugins and tried updating jquery by adding this to functions.php:

if( !is_admin()){
wp_deregister_script(‘jquery’);
wp_register_script(‘jquery’, (“http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js”), false, ‘1.9.1’);
wp_enqueue_script(‘jquery’);};

and:

wp_deregister_script(‘jquery’);
wp_register_script(‘jquery’, (“http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js”), false, ‘1.9.1’);
wp_enqueue_script(‘jquery’);

but with no change